From left to right,

Top row

U-42D, U-50, U-33sim, U-17sim, U?, U-11A, U-11A, U-73, U-42B

Bottom row

U-29, U-30A, U-68sim, U-17, U-3sim, U-133, U-32, U-38 U-39, U-3, U-38

Feel free to contact me if you think I have any of these numbers wrong.

I'm not sure of the U# for the grey pony in the middle top.