I may contaminate you may contaminate she may contaminate we may contaminate you may contaminate they may contaminate
V-ing form
I may be contaminating you may be contaminating she may be contaminating we may be contaminating you may be contaminating they may be contaminating
Perfect
I may have contaminated you may have contaminated she may have contaminated we may have contaminated you may have contaminated they may have contaminated
V-ing perfect
I may have been contaminating you may have been contaminating she may have been contaminating we may have been contaminating you may have been contaminating they may have been contaminating
Negation
Simple form
I may not contaminate you may not contaminate she may not contaminate we may not contaminate you may not contaminate they may not contaminate
V-ing form
I may not be contaminating you may not be contaminating she may not be contaminating we may not be contaminating you may not be contaminating they may not be contaminating
Perfect
I may not have contaminated you may not have contaminated she may not have contaminated we may not have contaminated you may not have contaminated they may not have contaminated
V-ing perfect
I may not have been contaminating you may not have been contaminating she may not have been contaminating we may not have been contaminating you may not have been contaminating they may not have been contaminating
Interrogative form
Simple form
may I contaminate? may you contaminate? may she contaminate? may we contaminate? may you contaminate? may they contaminate?
V-ing form
may I be contaminating? may you be contaminating? may she be contaminating? may we be contaminating? may you be contaminating? may they be contaminating?
Perfect
may I have contaminated? may you have contaminated? may she have contaminated? may we have contaminated? may you have contaminated? may they have contaminated?
V-ing perfect
may I have been contaminating? may you have been contaminating? may she have been contaminating? may we have been contaminating? may you have been contaminating? may they have been contaminating?
Interro-negative form
Simple form
may I not contaminate? may you not contaminate? may she not contaminate? may we not contaminate? may you not contaminate? may they not contaminate?
V-ing form
may I not be contaminating? may you not be contaminating? may she not be contaminating? may we not be contaminating? may you not be contaminating? may they not be contaminating?
Perfect
may I not have contaminated? may you not have contaminated? may she not have contaminated? may we not have contaminated? may you not have contaminated? may they not have contaminated?
V-ing perfect
may I not have been contaminating? may you not have been contaminating? may she not have been contaminating? may we not have been contaminating? may you not have been contaminating? may they not have been contaminating?