It’s interesting that the entry for 22 could indeed fit in as you suggest, but this is not allowed by the preamble. The entry runs inward from the perimeter.
Thanks Wintonian, I've parked the Inquisitor at the end game as I'm going around in circles with it...as usual!
I'll see if I can polish off this last three although I think one of them occurred to me while I was grinding my teeth at the i!