16.down--(4-5) It is unknown,repeatedly black inside,and tiny
14.down--(10) I traversed with difficulty being one who puffs
13 down.--(5,5) Make a huge effort over two types of stain
Thank you, Mayma. I've still two left after your help.
1.like some numbers if entrant is exercising (11)--possibly T-A-S-I-I-E
2.Sound doubtful during uncompleted construction as organic matter is seen (6) -U-O-S-- Mucous??