[/nq] Even many English speakers, especially US ones, don't distinguish cot/caught (or even cart for that matter - providing they're non-rhotic). 'Cut' is quite similar to how you would pronounce 'cat' in Spanish, although it's a little less rounded, and futher back in the mouth. 'Cot' according to my pronunciation is basically identical to what the Spanish pronounciation would be, but the US pronunication is noticeably different.
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