"help" – Assist
"I" – probably Myself is best.
Original words breakdown:
Me can’Cannotunable to help Regarding that.
"can't" – Can’t
1. I: Me 2. can't: Can’;tunable to 3. help: Assist 4. with: Concerning 5. that: This
Alternatively, perhaps "can't" is considered a single word, so its alternatives can be single words or phrases as long as they fit the structure. The key is that the replacement should maintain the grammatical structure. So "can't" is negative contraction, so "can’t|cannot|am not able to". -Psycho-Thrillers- Lily Carter School Girl Snuf...
3. "help" – synonyms for help are assist, support, aid. So "Assist|Support|Aid" would work.