English verb conjugation
CAN GAG

Regular verb: gag - gagged - gagged

Affirmation

Simple form	V-ing form
I can gag you can gag he can gag we can gag you can gag they can gag	I can be gagging you can be gagging he can be gagging we can be gagging you can be gagging they can be gagging
Perfect	V-ing perfect
I can have gagged you can have gagged he can have gagged we can have gagged you can have gagged they can have gagged	I can have been gagging you can have been gagging he can have been gagging we can have been gagging you can have been gagging they can have been gagging

Negation

Simple form	V-ing form
I can't gag you can't gag he can't gag we can't gag you can't gag they can't gag	I can't be gagging you can't be gagging he can't be gagging we can't be gagging you can't be gagging they can't be gagging
Perfect	V-ing perfect
I can't have gagged you can't have gagged he can't have gagged we can't have gagged you can't have gagged they can't have gagged	I can't have been gagging you can't have been gagging he can't have been gagging we can't have been gagging you can't have been gagging they can't have been gagging

Interrogative form

Simple form	V-ing form
can I gag? can you gag? can he gag? can we gag? can you gag? can they gag?	can I be gagging? can you be gagging? can he be gagging? can we be gagging? can you be gagging? can they be gagging?
Perfect	V-ing perfect
can I have gagged? can you have gagged? can he have gagged? can we have gagged? can you have gagged? can they have gagged?	can I have been gagging? can you have been gagging? can he have been gagging? can we have been gagging? can you have been gagging? can they have been gagging?

Interro-negative form

Simple form	V-ing form
can't I gag? can't you gag? can't he gag? can't we gag? can't you gag? can't they gag?	can't I be gagging? can't you be gagging? can't he be gagging? can't we be gagging? can't you be gagging? can't they be gagging?
Perfect	V-ing perfect
can't I have gagged? can't you have gagged? can't he have gagged? can't we have gagged? can't you have gagged? can't they have gagged?	can't I have been gagging? can't you have been gagging? can't he have been gagging? can't we have been gagging? can't you have been gagging? can't they have been gagging?