The Answers for Wordscapes Level 31872 from the Shell 18 pack and Master group are: cite, elk, ice, ilk, kilt, kit, kite, let, lit, lite, tic, tick, tickle, tie, til, and tile.
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.