diff --git a/unicoder.py b/unicoder.py
index 045ea0a..da36e19 100755
--- a/unicoder.py
+++ b/unicoder.py
@@ -469,15 +469,16 @@ def power(text: str) -> str:
         if graec:
             out.write(greek(graec))
             graec = ""
-        if c in norm_power_signs and x + 1 < len(text) and (text[x + 1] in norm_super_numbers or text[x + 1] in norm_super_before):
-            power = True
-            continue  # drop the power sign
-        if c in norm_power_signs and x + 1 < len(text) and (norm_base_a <= ord(text[x + 1]) and ord(text[x + 1]) <= norm_base_z):
-            graec = ""  # graec += text[x+1] # in next loop
-            continue
-        if c in norm_power_signs and x + 1 < len(text) and (norm_base_A <= ord(text[x + 1]) and ord(text[x + 1]) <= norm_base_Z):
-            graec = ""  # graec += text[x+1] # in next loop
-            continue
+        if c in norm_power_signs:
+            if x + 1 < len(text) and (text[x + 1] in norm_super_numbers or text[x + 1] in norm_super_before):
+                power = True
+                continue  # drop the power sign
+            if x + 1 < len(text) and (norm_base_a <= ord(text[x + 1]) and ord(text[x + 1]) <= norm_base_z):
+                graec = ""  # graec += text[x+1] # in next loop
+                continue
+            if x + 1 < len(text) and (norm_base_A <= ord(text[x + 1]) and ord(text[x + 1]) <= norm_base_Z):
+                graec = ""  # graec += text[x+1] # in next loop
+                continue
         if power:
             if c in norm_super_numbers:
                 out.write(chr(norm_super_numbers[c]))
@@ -487,12 +488,16 @@ def power(text: str) -> str:
                 out.write(chr(norm_super_after[c]))
             else:
                 power = False
-                if norm_base_a <= ch and ch <= norm_base_z:
-                    graec = c
-                    continue
-                if norm_base_A <= ch and ch <= norm_base_Z:
-                    graec = c
-                    continue
+                if c in norm_power_signs:
+                    if x + 1 < len(text) and (text[x + 1] in norm_super_numbers or text[x + 1] in norm_super_before):
+                        power = True
+                        continue  # drop the power sign
+                    if x + 1 < len(text) and (norm_base_a <= ord(text[x + 1]) and ord(text[x + 1]) <= norm_base_z):
+                        graec = ""  # graec += text[x+1] # in next loop
+                        continue
+                    if x + 1 < len(text) and (norm_base_A <= ord(text[x + 1]) and ord(text[x + 1]) <= norm_base_Z):
+                        graec = ""  # graec += text[x+1] # in next loop
+                        continue
                 out.write(c)
         else:
             out.write(c)
diff --git a/unicoder.py.tests.py b/unicoder.py.tests.py
index 1fca65a..2d41fbe 100755
--- a/unicoder.py.tests.py
+++ b/unicoder.py.tests.py
@@ -882,13 +882,13 @@ def test_601_norm_greek(self) -> None:
         uni = unicoder.convert("greek", base_abcdefghijklmnopqrstuvwxyz)
         self.assertEqual(uni, ":αβχδεφγηιικλμνοπκρστω∂ψξυζ")
     def test_602_norm_greek(self) -> None:
-        uni = unicoder.convert("math", base_abcdefghijklmnopqrstuvwxyz)
+        uni = unicoder.convert("graec", base_abcdefghijklmnopqrstuvwxyz)
         self.assertEqual(uni, ":αβχδεφγηιικλμνοπκρστω∂ψξυζ")
     def test_603_norm_greek(self) -> None:
         uni = unicoder.convert("greek", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
         self.assertEqual(uni, ":ΑΒΧΔΕΦΓΗΙΙΚΛΜΝΟΠΚΡΣΤΩ∇ΨΞΥΖ")
     def test_604_norm_greek(self) -> None:
-        uni = unicoder.convert("math", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
+        uni = unicoder.convert("graec", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
         self.assertEqual(uni, ":ΑΒΧΔΕΦΓΗΙΙΚΛΜΝΟΠΚΡΣΤΩ∇ΨΞΥΖ")
     def test_605_norm_greek(self) -> None:
         uni = unicoder.greek(base_abcdefghijklmnopqrstuvwxyz)
@@ -906,13 +906,13 @@ def test_621_bold_greek(self) -> None:
         uni = unicoder.convert("boldgreek", base_abcdefghijklmnopqrstuvwxyz)
         self.assertEqual(uni, ":𝛂𝛃𝛘𝛅𝛆𝛗𝛄𝛈𝛊𝛊𝛋𝛌𝛍𝛎𝛐𝛑𝛋𝛒𝛔𝛕𝛚𝛛𝛙𝛏𝛖𝛇")
     def test_622_bold_greek(self) -> None:
-        uni = unicoder.convert("fatmath", base_abcdefghijklmnopqrstuvwxyz)
+        uni = unicoder.convert("fatgraec", base_abcdefghijklmnopqrstuvwxyz)
         self.assertEqual(uni, ":𝛂𝛃𝛘𝛅𝛆𝛗𝛄𝛈𝛊𝛊𝛋𝛌𝛍𝛎𝛐𝛑𝛋𝛒𝛔𝛕𝛚𝛛𝛙𝛏𝛖𝛇")
     def test_623_bold_greek(self) -> None:
         uni = unicoder.convert("boldgreek", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
         self.assertEqual(uni, ":𝚨𝚩𝚾𝚫𝚬𝚽𝚪𝚮𝚰𝚰𝚱𝚲𝚳𝚴𝚶𝚷𝚱𝚸𝚺𝚻𝛀𝛁𝚿𝚵𝚼𝚭")
     def test_624_bold_greek(self) -> None:
-        uni = unicoder.convert("fatmath", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
+        uni = unicoder.convert("fatgraec", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
         self.assertEqual(uni, ":𝚨𝚩𝚾𝚫𝚬𝚽𝚪𝚮𝚰𝚰𝚱𝚲𝚳𝚴𝚶𝚷𝚱𝚸𝚺𝚻𝛀𝛁𝚿𝚵𝚼𝚭")
     def test_625_bold_greek(self) -> None:
         uni = unicoder.bold(unicoder.greek(base_abcdefghijklmnopqrstuvwxyz))
@@ -930,13 +930,13 @@ def test_641_ital_greek(self) -> None:
         uni = unicoder.convert("italgreek", base_abcdefghijklmnopqrstuvwxyz)
         self.assertEqual(uni, ":𝛼𝛽𝜒𝛿𝜀𝜑𝛾𝜂𝜄𝜄𝜅𝜆𝜇𝜈𝜊𝜋𝜅𝜌𝜎𝜏𝜔𝜕𝜓𝜉𝜐𝜁")
     def test_642_ital_greek(self) -> None:
-        uni = unicoder.convert("slantmath", base_abcdefghijklmnopqrstuvwxyz)
+        uni = unicoder.convert("slantgraec", base_abcdefghijklmnopqrstuvwxyz)
         self.assertEqual(uni, ":𝛼𝛽𝜒𝛿𝜀𝜑𝛾𝜂𝜄𝜄𝜅𝜆𝜇𝜈𝜊𝜋𝜅𝜌𝜎𝜏𝜔𝜕𝜓𝜉𝜐𝜁")
     def test_643_ital_greek(self) -> None:
         uni = unicoder.convert("italgreek", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
         self.assertEqual(uni, ":𝛢𝛣𝛸𝛥𝛦𝛷𝛤𝛨𝛪𝛪𝛫𝛬𝛭𝛮𝛰𝛱𝛫𝛲𝛴𝛵𝛺𝛻𝛹𝛯𝛶𝛧")
     def test_644_ital_greek(self) -> None:
-        uni = unicoder.convert("slantmath", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
+        uni = unicoder.convert("slantgraec", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
         self.assertEqual(uni, ":𝛢𝛣𝛸𝛥𝛦𝛷𝛤𝛨𝛪𝛪𝛫𝛬𝛭𝛮𝛰𝛱𝛫𝛲𝛴𝛵𝛺𝛻𝛹𝛯𝛶𝛧")
     def test_645_ital_greek(self) -> None:
         uni = unicoder.ital(unicoder.greek(base_abcdefghijklmnopqrstuvwxyz))
@@ -954,13 +954,13 @@ def test_661_bold_ital_greek(self) -> None:
         uni = unicoder.convert("bolditalgreek", base_abcdefghijklmnopqrstuvwxyz)
         self.assertEqual(uni, ":𝜶𝜷𝝌𝜹𝜺𝝋𝜸𝜼𝜾𝜾𝜿𝝀𝝁𝝂𝝄𝝅𝜿𝝆𝝈𝝉𝝎𝝏𝝍𝝃𝝊𝜻")
     def test_662_bold_ital_greek(self) -> None:
-        uni = unicoder.convert("fatslantmath", base_abcdefghijklmnopqrstuvwxyz)
+        uni = unicoder.convert("fatslantgraec", base_abcdefghijklmnopqrstuvwxyz)
         self.assertEqual(uni, ":𝜶𝜷𝝌𝜹𝜺𝝋𝜸𝜼𝜾𝜾𝜿𝝀𝝁𝝂𝝄𝝅𝜿𝝆𝝈𝝉𝝎𝝏𝝍𝝃𝝊𝜻")
     def test_663_bold_ital_greek(self) -> None:
         uni = unicoder.convert("bolditalgreek", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
         self.assertEqual(uni, ":𝜜𝜝𝜲𝜟𝜠𝜱𝜞𝜢𝜤𝜤𝜥𝜦𝜧𝜨𝜪𝜫𝜥𝜬𝜮𝜯𝜴𝜵𝜳𝜩𝜰𝜡")
     def test_664_bold_ital_greek(self) -> None:
-        uni = unicoder.convert("fatslantmath", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
+        uni = unicoder.convert("fatslantgraec", base_ABCDEFGHIJKLMNOPQRSTUVWXYZ)
         self.assertEqual(uni, ":𝜜𝜝𝜲𝜟𝜠𝜱𝜞𝜢𝜤𝜤𝜥𝜦𝜧𝜨𝜪𝜫𝜥𝜬𝜮𝜯𝜴𝜵𝜳𝜩𝜰𝜡")
     def test_665_bold_ital_greek(self) -> None:
         uni = unicoder.bold(unicoder.ital(
@@ -1230,7 +1230,12 @@ def test_877_power(self) -> None:
     def test_878_power(self) -> None:
         txt = "^(-20a) (^X)"
         uni = unicoder.power(txt)
-        self.assertEqual(uni, "⁽⁻²⁰α) (Ξ)")
+        self.assertEqual(uni, "⁽⁻²⁰a) (Ξ)")
+        self.assertNotEqual(uni, txt)
+    def test_879_power(self) -> None:
+        txt = "^(-20^a) (^X)"
+        uni = unicoder.power(txt)
+        self.assertEqual(uni, "⁽⁻²⁰α⁾ (Ξ)")
         self.assertNotEqual(uni, txt)
     def test_880_subscript(self) -> None:
         txt = "+-0123456789"
@@ -1415,9 +1420,9 @@ def test_944_norm_4_5(self) -> None:
         self.assertEqual(uni, "go 15⅘ km/h more")
         self.assertNotEqual(uni, txt)
     def test_990_math(self) -> None:
-        txt = "A_1^2 + 1/4"
+        txt = "^D_1^2 + 1/4"
         uni = unicoder.convert("math", txt)
-        self.assertEqual(uni, "Α₁² +¼")
+        self.assertEqual(uni, "Δ₁² +¼")
         self.assertNotEqual(uni, txt)