31.   The president underwent a quintuple heart bypass operation last month.

n. + undergo >>共 789
patient 4.55%
industry 2.39%
woman 2.39%
company 2.06%
president 1.45%
player 1.45%
man 1.41%
country 1.17%
people 0.98%
system 0.94%
president + v. >>共 673
be 11.15%
say 7.53%
have 4.79%
make 2.04%
meet 1.35%
take 1.34%
want 1.26%
speak 1.06%
call 1.00%
sign 1.00%
undergo 0.14%
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