The Answers for Wordscapes Level 33100 from the Valley 39 pack and Master group are: moo, mop, oops, opossum, ops, opus, possum, pus, sop, soup, sum, sumo, sump, sup, and ups.
Just a heads-up: the puzzle layout on Master levels is autogenerated, so the grid you see here might look a little different than the one in your game.