獨棟

独 = 犭 + 虫 : Everyone has left the space station, only the animals are left: Doggy Dog (du), the dachshund (犭) and the mosquito (虫). They have noone who throws them a stick or exposes their bare body parts to bite. All alone (独), they wait in the space station's entrance (Ø2).

栋 = 东 + 木 : Doggy Dog sets up his tent in the engine's bathroom. He already set up a Christmas tree and an Oriental Pearl Tower model as tent poles, and he is busy fixing the ridgepole atop of them.