''pull'' and ''pool'', same or different in Australian English.

There is no merger of "cunt" and "can't" in AusE: the vowel in the latter is longer.

The NZ "sex"/"six" thing is a chain shift not a phonemic merger but I suspect that LOL was joking (note the name).

Thanks for that Frances and my idea is out of the window now LOL. Yes Don is right - thanks Don