There is a little controversy here which may need amending with regards to the spelling of raccoon, as it may be spelt with or without the double 'c'. Great quiz though.
I agree with the previous comment. The question should be RCCN, with the single C option available for those using an alternative spelling, rather than the other way around. Raccoon is a far more common spelling than Racoon.
Feels a bit disingenous to omit it here. (The average folk don't class Y as a vowel as this depends on context)
HN could be hen