SimilarityRank
compulsory 0.797 17415
be_mandatory 0.710 18140
be_compulsory 0.661 49804
Mandatory 0.656 99532
be_mandatory_for 0.647 51313
required 0.645 5608
obligatory 0.639 20984
optional 0.626 6363
an_optional 0.565 27198
mandate_by 0.554 53169
requirement_for 0.552 3491
requirement 0.546 918
voluntary 0.546 6529
mandate_that 0.543 25728
it_be_mandatory 0.543 93758
be_optional 0.539 16185
strict 0.530 10958
a_voluntary 0.526 34699
not_require 0.522 26621
more_stringent 0.520 92552
stringent 0.518 42883
a_minimum 0.517 23588
exemption_from 0.516 46399
an_approve 0.514 30644
specified 0.511 14645