Sorry folks. I fell asleep in thje garden. Auld age, eh?
Good tries everyone. Nice to 'see' Jazzy, Roz, AB, Peterm, Andyc and Ari.
Super AB, got all except 4.
I'll go off for din-din (stop laughing Ari!) and I'll publish my workings later. Meanwhile, you've solved some crossing no. 4 and now have:-
4. ??C?E?