I may contaminate you may contaminate he may contaminate we may contaminate you may contaminate they may contaminate
V-ing form
I may be contaminating you may be contaminating he may be contaminating we may be contaminating you may be contaminating they may be contaminating
Perfect
I may have contaminated you may have contaminated he 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 he may have been contaminating we may have been contaminating you may have been contaminating they may have been contaminating
Negation
Simple form
I mayn't contaminate you mayn't contaminate he mayn't contaminate we mayn't contaminate you mayn't contaminate they mayn't contaminate
V-ing form
I mayn't be contaminating you mayn't be contaminating he mayn't be contaminating we mayn't be contaminating you mayn't be contaminating they mayn't be contaminating
Perfect
I mayn't have contaminated you mayn't have contaminated he mayn't have contaminated we mayn't have contaminated you mayn't have contaminated they mayn't have contaminated
V-ing perfect
I mayn't have been contaminating you mayn't have been contaminating he mayn't have been contaminating we mayn't have been contaminating you mayn't have been contaminating they mayn't have been contaminating
Interrogative form
Simple form
may I contaminate? may you contaminate? may he contaminate? may we contaminate? may you contaminate? may they contaminate?
V-ing form
may I be contaminating? may you be contaminating? may he be contaminating? may we be contaminating? may you be contaminating? may they be contaminating?
Perfect
may I have contaminated? may you have contaminated? may he 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 he have been contaminating? may we have been contaminating? may you have been contaminating? may they have been contaminating?
Interro-negative form
Simple form
mayn't I contaminate? mayn't you contaminate? mayn't he contaminate? mayn't we contaminate? mayn't you contaminate? mayn't they contaminate?
V-ing form
mayn't I be contaminating? mayn't you be contaminating? mayn't he be contaminating? mayn't we be contaminating? mayn't you be contaminating? mayn't they be contaminating?
Perfect
mayn't I have contaminated? mayn't you have contaminated? mayn't he have contaminated? mayn't we have contaminated? mayn't you have contaminated? mayn't they have contaminated?
V-ing perfect
mayn't I have been contaminating? mayn't you have been contaminating? mayn't he have been contaminating? mayn't we have been contaminating? mayn't you have been contaminating? mayn't they have been contaminating?