n. + spread >>共 1255
disease 4.98%
cancer 4.02%
fire 3.95%
word 3.82%
air 2.35%
rumor 2.30%
virus 2.21%
violence 1.79%
news 1.39%
protest 1.39%
disease + v. >>共 333
be 26.96%
spread 9.48%
cause 5.34%
affect 2.93%
kill 2.72%
have 2.07%
occur 1.62%
attack 1.45%
take 1.45%
become 1.31%
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