Toogle case generator problem

[Turysta]

This generator is working for 14 characters long
https://github.com/DidierStevens/DidierS...e-rules.py
https://blog.didierstevens.com/2016/07/1...gle-rules/

But I need to generate for 20 characters.
When I run for 20 character hashcat is skipping:

"Skipping invalid or unsupported rule in file 20updown.rule on line 17: T10"
"Skipping invalid or unsupported rule in file 20updown.rule on line 1048575: T0T1T2T3T4T5T6T7T8T9TATBTCTDTETFT10T11T12T13"