"practicing"

Oi, you told me you were English!

Okay, I admit to sometimes having to check before using words of this format.
I always refer back to two differently pronounced words, 'advice' & advise'.
'Advice' is a noun, 'I offer advice'
'Advise' is a verb, 'I advise'
All the other 'ce' / 'se' words appear to follow the same rules.

A useful method of discriminating.