English verb conjugation
MAY PUMP

Regular verb: pump - pumped - pumped

Affirmation

Simple form	V-ing form
I may pump you may pump he may pump we may pump you may pump they may pump	I may be pumping you may be pumping he may be pumping we may be pumping you may be pumping they may be pumping
Perfect	V-ing perfect
I may have pumped you may have pumped he may have pumped we may have pumped you may have pumped they may have pumped	I may have been pumping you may have been pumping he may have been pumping we may have been pumping you may have been pumping they may have been pumping

Negation

Simple form	V-ing form
I mayn't pump you mayn't pump he mayn't pump we mayn't pump you mayn't pump they mayn't pump	I mayn't be pumping you mayn't be pumping he mayn't be pumping we mayn't be pumping you mayn't be pumping they mayn't be pumping
Perfect	V-ing perfect
I mayn't have pumped you mayn't have pumped he mayn't have pumped we mayn't have pumped you mayn't have pumped they mayn't have pumped	I mayn't have been pumping you mayn't have been pumping he mayn't have been pumping we mayn't have been pumping you mayn't have been pumping they mayn't have been pumping

Interrogative form

Simple form	V-ing form
may I pump? may you pump? may he pump? may we pump? may you pump? may they pump?	may I be pumping? may you be pumping? may he be pumping? may we be pumping? may you be pumping? may they be pumping?
Perfect	V-ing perfect
may I have pumped? may you have pumped? may he have pumped? may we have pumped? may you have pumped? may they have pumped?	may I have been pumping? may you have been pumping? may he have been pumping? may we have been pumping? may you have been pumping? may they have been pumping?

Interro-negative form

Simple form	V-ing form
mayn't I pump? mayn't you pump? mayn't he pump? mayn't we pump? mayn't you pump? mayn't they pump?	mayn't I be pumping? mayn't you be pumping? mayn't he be pumping? mayn't we be pumping? mayn't you be pumping? mayn't they be pumping?
Perfect	V-ing perfect
mayn't I have pumped? mayn't you have pumped? mayn't he have pumped? mayn't we have pumped? mayn't you have pumped? mayn't they have pumped?	mayn't I have been pumping? mayn't you have been pumping? mayn't he have been pumping? mayn't we have been pumping? mayn't you have been pumping? mayn't they have been pumping?