Add spaces: Notonlybarley,wheat,oatsandrye,butalmostallfieldcrops,anyculturalplantgrowedinfields.

Answer: Not only barley, wheat, oats and rye, but almost all field crops, any cultural plant growed in fields.

Add spaces: natural,toys,bigtits

Answer: natural, toys, big tits

Add spaces: Later,Irenaeusmentioned21books(A.D.185).

Answer:
Later, Irenaeus mentioned 21 books (A.D. 185).