v. + reason >>共 360
have 40.02%
give 19.58%
see 8.10%
cite 6.38%
find 3.29%
explain 2.52%
offer 1.98%
know 1.34%
provide 1.19%
understand 0.84%
explain + n. >>共 1380
decision 3.64%
reason 3.51%
difference 2.29%
action 2.25%
situation 1.97%
position 1.75%
discrepancy 1.29%
problem 1.25%
thing 1.14%
phenomenon 1.02%
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