11.   Each arm has motors to open and close three joints.

v. + motor >>共 92
start 7.65%
have 6.01%
use 4.37%
cut 3.28%
gun 3.28%
blow 3.28%
turn 3.28%
replace 2.73%
run 2.19%
power 2.19%
have + n. >>共 1145
chance 2.31%
problem 2.14%
trouble 1.82%
right 1.67%
plan 1.46%
idea 1.28%
lot 1.20%
time 1.09%
child 1.04%
power 1.04%
motor 0%
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