English verb conjugation
CAN CONTUSE

Regular verb: contuse - contused - contused

Affirmation

Simple form	V-ing form
I can contuse you can contuse she can contuse we can contuse you can contuse they can contuse	I can be contusing you can be contusing she can be contusing we can be contusing you can be contusing they can be contusing
Perfect	V-ing perfect
I can have contused you can have contused she can have contused we can have contused you can have contused they can have contused	I can have been contusing you can have been contusing she can have been contusing we can have been contusing you can have been contusing they can have been contusing

Negation

Simple form	V-ing form
I can't contuse you can't contuse she can't contuse we can't contuse you can't contuse they can't contuse	I can't be contusing you can't be contusing she can't be contusing we can't be contusing you can't be contusing they can't be contusing
Perfect	V-ing perfect
I can't have contused you can't have contused she can't have contused we can't have contused you can't have contused they can't have contused	I can't have been contusing you can't have been contusing she can't have been contusing we can't have been contusing you can't have been contusing they can't have been contusing

Interrogative form

Simple form	V-ing form
can I contuse? can you contuse? can she contuse? can we contuse? can you contuse? can they contuse?	can I be contusing? can you be contusing? can she be contusing? can we be contusing? can you be contusing? can they be contusing?
Perfect	V-ing perfect
can I have contused? can you have contused? can she have contused? can we have contused? can you have contused? can they have contused?	can I have been contusing? can you have been contusing? can she have been contusing? can we have been contusing? can you have been contusing? can they have been contusing?

Interro-negative form

Simple form	V-ing form
can't I contuse? can't you contuse? can't she contuse? can't we contuse? can't you contuse? can't they contuse?	can't I be contusing? can't you be contusing? can't she be contusing? can't we be contusing? can't you be contusing? can't they be contusing?
Perfect	V-ing perfect
can't I have contused? can't you have contused? can't she have contused? can't we have contused? can't you have contused? can't they have contused?	can't I have been contusing? can't you have been contusing? can't she have been contusing? can't we have been contusing? can't you have been contusing? can't they have been contusing?