English verb conjugation
CAN COUPLE

Regular verb: couple - coupled - coupled

Affirmation

Simple form	V-ing form
I can couple you can couple he can couple we can couple you can couple they can couple	I can be coupling you can be coupling he can be coupling we can be coupling you can be coupling they can be coupling
Perfect	V-ing perfect
I can have coupled you can have coupled he can have coupled we can have coupled you can have coupled they can have coupled	I can have been coupling you can have been coupling he can have been coupling we can have been coupling you can have been coupling they can have been coupling

Negation

Simple form	V-ing form
I can't couple you can't couple he can't couple we can't couple you can't couple they can't couple	I can't be coupling you can't be coupling he can't be coupling we can't be coupling you can't be coupling they can't be coupling
Perfect	V-ing perfect
I can't have coupled you can't have coupled he can't have coupled we can't have coupled you can't have coupled they can't have coupled	I can't have been coupling you can't have been coupling he can't have been coupling we can't have been coupling you can't have been coupling they can't have been coupling

Interrogative form

Simple form	V-ing form
can I couple? can you couple? can he couple? can we couple? can you couple? can they couple?	can I be coupling? can you be coupling? can he be coupling? can we be coupling? can you be coupling? can they be coupling?
Perfect	V-ing perfect
can I have coupled? can you have coupled? can he have coupled? can we have coupled? can you have coupled? can they have coupled?	can I have been coupling? can you have been coupling? can he have been coupling? can we have been coupling? can you have been coupling? can they have been coupling?

Interro-negative form

Simple form	V-ing form
can't I couple? can't you couple? can't he couple? can't we couple? can't you couple? can't they couple?	can't I be coupling? can't you be coupling? can't he be coupling? can't we be coupling? can't you be coupling? can't they be coupling?
Perfect	V-ing perfect
can't I have coupled? can't you have coupled? can't he have coupled? can't we have coupled? can't you have coupled? can't they have coupled?	can't I have been coupling? can't you have been coupling? can't he have been coupling? can't we have been coupling? can't you have been coupling? can't they have been coupling?