English verb conjugation
MAY CURB

Regular verb: curb - curbed - curbed

Affirmation

Simple form	V-ing form
I may curb you may curb he may curb we may curb you may curb they may curb	I may be curbing you may be curbing he may be curbing we may be curbing you may be curbing they may be curbing
Perfect	V-ing perfect
I may have curbed you may have curbed he may have curbed we may have curbed you may have curbed they may have curbed	I may have been curbing you may have been curbing he may have been curbing we may have been curbing you may have been curbing they may have been curbing

Negation

Simple form	V-ing form
I mayn't curb you mayn't curb he mayn't curb we mayn't curb you mayn't curb they mayn't curb	I mayn't be curbing you mayn't be curbing he mayn't be curbing we mayn't be curbing you mayn't be curbing they mayn't be curbing
Perfect	V-ing perfect
I mayn't have curbed you mayn't have curbed he mayn't have curbed we mayn't have curbed you mayn't have curbed they mayn't have curbed	I mayn't have been curbing you mayn't have been curbing he mayn't have been curbing we mayn't have been curbing you mayn't have been curbing they mayn't have been curbing

Interrogative form

Simple form	V-ing form
may I curb? may you curb? may he curb? may we curb? may you curb? may they curb?	may I be curbing? may you be curbing? may he be curbing? may we be curbing? may you be curbing? may they be curbing?
Perfect	V-ing perfect
may I have curbed? may you have curbed? may he have curbed? may we have curbed? may you have curbed? may they have curbed?	may I have been curbing? may you have been curbing? may he have been curbing? may we have been curbing? may you have been curbing? may they have been curbing?

Interro-negative form

Simple form	V-ing form
mayn't I curb? mayn't you curb? mayn't he curb? mayn't we curb? mayn't you curb? mayn't they curb?	mayn't I be curbing? mayn't you be curbing? mayn't he be curbing? mayn't we be curbing? mayn't you be curbing? mayn't they be curbing?
Perfect	V-ing perfect
mayn't I have curbed? mayn't you have curbed? mayn't he have curbed? mayn't we have curbed? mayn't you have curbed? mayn't they have curbed?	mayn't I have been curbing? mayn't you have been curbing? mayn't he have been curbing? mayn't we have been curbing? mayn't you have been curbing? mayn't they have been curbing?