English verb conjugation
CAN FORCE

Regular verb: force - forced - forced

Affirmation

Simple form	V-ing form
I can force you can force she can force we can force you can force they can force	I can be forcing you can be forcing she can be forcing we can be forcing you can be forcing they can be forcing
Perfect	V-ing perfect
I can have forced you can have forced she can have forced we can have forced you can have forced they can have forced	I can have been forcing you can have been forcing she can have been forcing we can have been forcing you can have been forcing they can have been forcing

Negation

Simple form	V-ing form
I can't force you can't force she can't force we can't force you can't force they can't force	I can't be forcing you can't be forcing she can't be forcing we can't be forcing you can't be forcing they can't be forcing
Perfect	V-ing perfect
I can't have forced you can't have forced she can't have forced we can't have forced you can't have forced they can't have forced	I can't have been forcing you can't have been forcing she can't have been forcing we can't have been forcing you can't have been forcing they can't have been forcing

Interrogative form

Simple form	V-ing form
can I force? can you force? can she force? can we force? can you force? can they force?	can I be forcing? can you be forcing? can she be forcing? can we be forcing? can you be forcing? can they be forcing?
Perfect	V-ing perfect
can I have forced? can you have forced? can she have forced? can we have forced? can you have forced? can they have forced?	can I have been forcing? can you have been forcing? can she have been forcing? can we have been forcing? can you have been forcing? can they have been forcing?

Interro-negative form

Simple form	V-ing form
can't I force? can't you force? can't she force? can't we force? can't you force? can't they force?	can't I be forcing? can't you be forcing? can't she be forcing? can't we be forcing? can't you be forcing? can't they be forcing?
Perfect	V-ing perfect
can't I have forced? can't you have forced? can't she have forced? can't we have forced? can't you have forced? can't they have forced?	can't I have been forcing? can't you have been forcing? can't she have been forcing? can't we have been forcing? can't you have been forcing? can't they have been forcing?