Which preposition to use with armpit

of Occurrences 2%

He uses no soap, and has a most uncouth-looking razor, yet he shaves the heads, beards, moustaches, and armpits of his customers with great deftness.

for Occurrences 1%

The lower classes of natives shave the hair of the head and of the armpits for the sake of cleanliness and for other obvious reasons.

in Occurrences 1%

At a deep branch of the stream the three rearmost came in sight of Jack, up to his armpits in water and pushing for the shore.

to Occurrences 1%

I likewise felt several slender ligatures across my body, from my armpits to my thighs.

Which preposition to use with  armpit