English verb conjugation
MAY PIERCE

Regular verb: pierce - pierced - pierced

Affirmation

Simple form	V-ing form
I may pierce you may pierce he may pierce we may pierce you may pierce they may pierce	I may be piercing you may be piercing he may be piercing we may be piercing you may be piercing they may be piercing
Perfect	V-ing perfect
I may have pierced you may have pierced he may have pierced we may have pierced you may have pierced they may have pierced	I may have been piercing you may have been piercing he may have been piercing we may have been piercing you may have been piercing they may have been piercing

Negation

Simple form	V-ing form
I mayn't pierce you mayn't pierce he mayn't pierce we mayn't pierce you mayn't pierce they mayn't pierce	I mayn't be piercing you mayn't be piercing he mayn't be piercing we mayn't be piercing you mayn't be piercing they mayn't be piercing
Perfect	V-ing perfect
I mayn't have pierced you mayn't have pierced he mayn't have pierced we mayn't have pierced you mayn't have pierced they mayn't have pierced	I mayn't have been piercing you mayn't have been piercing he mayn't have been piercing we mayn't have been piercing you mayn't have been piercing they mayn't have been piercing

Interrogative form

Simple form	V-ing form
may I pierce? may you pierce? may he pierce? may we pierce? may you pierce? may they pierce?	may I be piercing? may you be piercing? may he be piercing? may we be piercing? may you be piercing? may they be piercing?
Perfect	V-ing perfect
may I have pierced? may you have pierced? may he have pierced? may we have pierced? may you have pierced? may they have pierced?	may I have been piercing? may you have been piercing? may he have been piercing? may we have been piercing? may you have been piercing? may they have been piercing?

Interro-negative form

Simple form	V-ing form
mayn't I pierce? mayn't you pierce? mayn't he pierce? mayn't we pierce? mayn't you pierce? mayn't they pierce?	mayn't I be piercing? mayn't you be piercing? mayn't he be piercing? mayn't we be piercing? mayn't you be piercing? mayn't they be piercing?
Perfect	V-ing perfect
mayn't I have pierced? mayn't you have pierced? mayn't he have pierced? mayn't we have pierced? mayn't you have pierced? mayn't they have pierced?	mayn't I have been piercing? mayn't you have been piercing? mayn't he have been piercing? mayn't we have been piercing? mayn't you have been piercing? mayn't they have been piercing?