on *:TEXT:!c:#help: { /HELPCOMMANDS }

How I can make multiple choice of command works into 1.

i.e.

Code
.c
!c
!command
.command


But to have all in 1 [ON TEXT]

Tried to be smart but didn't work for me?

on *:TEXT:!c|.c|!command|.command:#help: { /HELPCOMMANDS }

I'm guessing regex will work but I have zero skills on regex frown

Thanks