If TASS is correct, it leaves me with --SN for 32ac.
Male hern? It's head tucked inside lower part of leg.
Is there a 4 letter word ending in SN or have I gone horribly wrong???
I'm a bit puzzled about 32ac as well. Moving the h in shin doesn't give the answer. Moving the s does, which suggests that "head" refers to the fist letter of shin, but I can't really see how that squares with the clue.