洞孔

洞 = 同 + 氵 : Doggy Dog (du) finds two twins (同) have fallen down the cave (洞) in the engine's bathroom ((e)ng4). He immediately begins to dig a tunnel to bring them a bottle of water (氵) until more help arrives.

孔 = 乚 + 孑 : Karl Koala (ku) created one 孔 cave dwelling by digging a hole (孔) into one of the engine's ((e)ng3) boulders using a shovel (乚). Unfortunately there are many mosquitoes (孑) and Karl tries to kill them using the shovel.

孔 = 乚 + 孑 : Karl Koala (ku) created one 孔 cave dwelling by digging a hole (孔) into one of the engine's ((e)ng3) boulders using a shovel (乚). Unfortunately there are many mosquitoes (孑) and Karl tries to kill them using the shovel.