Below
Down, Under, Beneath
There's the ground, and there's a toe just below it. Yep, you know this means "below" because the ground has a toe below it in this kanji.
か, げ
した, さ, くだ, お, しも, もと
None
You keep digging in the ground for the toe below, but instead you hit something hard and metallic. You try to dig around it, but it's huge. Turns out it's a car (か). Keep digging until you unearth the car below. (Inside, you find the toe you were looking for.)