(1) preventive maintenance ::
tiv thaiv txij nkawm(2) preventive measures ::
tiv thaiv kev ntsuas(3) preventive action ::
tiv thaiv txiav txim(4) preventive medicine ::
tiv thaiv cov tshuaj(5) preventive measure ::
tiv thaiv kev ntsuas(6) preventive detention ::
tiv thaiv kev raug txim