Add letters function for PcGroupElem
#17567
| Job | Run time |
|---|---|
| 27m 34s | |
| 1h 50m 16s | |
| 26m 0s | |
| 1h 1m 6s | |
| 31m 50s | |
| 1h 12m 24s | |
| 26m 7s | |
| 46m 0s | |
| 13m 59s | |
| 1h 27m 55s | |
| 51m 23s | |
| 1h 24m 42s | |
| 56m 40s | |
| 1h 11m 54s | |
| 46m 9s | |
| 15m 13s | |
| 13m 48s | |
| 47m 51s | |
| 1h 1m 14s | |
| 15h 52m 5s |