For all the loose 1's, they go in: C1, R9, C2, R8 and R18, C3, R8 and the 2 in R18-19 C4, R8 and R20 C13, R12 and R21 C14, R12 and R22 C15, R12 and R23 C16, R11 and R24 C17, R23
Hope that helps (and that I didn't mess any of it up) if not follow Rawr's advice and look up a picture of the thing. Not a good hanjie.