English verb conjugation
CAN OVERSTAFF

Regular verb: overstaff - overstaffed - overstaffed

Affirmation

Simple form	V-ing form
I can overstaff you can overstaff he can overstaff we can overstaff you can overstaff they can overstaff	I can be overstaffing you can be overstaffing he can be overstaffing we can be overstaffing you can be overstaffing they can be overstaffing
Perfect	V-ing perfect
I can have overstaffed you can have overstaffed he can have overstaffed we can have overstaffed you can have overstaffed they can have overstaffed	I can have been overstaffing you can have been overstaffing he can have been overstaffing we can have been overstaffing you can have been overstaffing they can have been overstaffing

Negation

Simple form	V-ing form
I cannot overstaff you cannot overstaff he cannot overstaff we cannot overstaff you cannot overstaff they cannot overstaff	I cannot be overstaffing you cannot be overstaffing he cannot be overstaffing we cannot be overstaffing you cannot be overstaffing they cannot be overstaffing
Perfect	V-ing perfect
I cannot have overstaffed you cannot have overstaffed he cannot have overstaffed we cannot have overstaffed you cannot have overstaffed they cannot have overstaffed	I cannot have been overstaffing you cannot have been overstaffing he cannot have been overstaffing we cannot have been overstaffing you cannot have been overstaffing they cannot have been overstaffing

Interrogative form

Simple form	V-ing form
can I overstaff? can you overstaff? can he overstaff? can we overstaff? can you overstaff? can they overstaff?	can I be overstaffing? can you be overstaffing? can he be overstaffing? can we be overstaffing? can you be overstaffing? can they be overstaffing?
Perfect	V-ing perfect
can I have overstaffed? can you have overstaffed? can he have overstaffed? can we have overstaffed? can you have overstaffed? can they have overstaffed?	can I have been overstaffing? can you have been overstaffing? can he have been overstaffing? can we have been overstaffing? can you have been overstaffing? can they have been overstaffing?

Interro-negative form

Simple form	V-ing form
can I not overstaff? can you not overstaff? can he not overstaff? can we not overstaff? can you not overstaff? can they not overstaff?	can I not be overstaffing? can you not be overstaffing? can he not be overstaffing? can we not be overstaffing? can you not be overstaffing? can they not be overstaffing?
Perfect	V-ing perfect
can I not have overstaffed? can you not have overstaffed? can he not have overstaffed? can we not have overstaffed? can you not have overstaffed? can they not have overstaffed?	can I not have been overstaffing? can you not have been overstaffing? can he not have been overstaffing? can we not have been overstaffing? can you not have been overstaffing? can they not have been overstaffing?