can couple
Regular verb: couple - coupled- coupled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can couple
you can couple
she can couple
we can couple
you can couple
they can couple 	I can be coupling
you can be coupling
she can be coupling
we can be coupling
you can be coupling
they can be coupling	I can have coupled
you can have coupled
she 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
she 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 	Perfect 	V-ing perfect 	
I cannot couple
you cannot couple
she cannot couple
we cannot couple
you cannot couple
they cannot couple 	I cannot be coupling
you cannot be coupling
she cannot be coupling
we cannot be coupling
you cannot be coupling
they cannot be coupling	I cannot have coupled
you cannot have coupled
she cannot have coupled
we cannot have coupled
you cannot have coupled
they cannot have coupled	I cannot have been coupling
you cannot have been coupling
she cannot have been coupling
we cannot have been coupling
you cannot have been coupling
they cannot have been coupling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I couple?
can you couple?
can she couple?
can we couple?
can you couple?
can they couple? 	can I be coupling?
can you be coupling?
can she be coupling?
can we be coupling?
can you be coupling?
can they be coupling? 	can I have coupled?
can you have coupled?
can she 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 she 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 	Perfect 	V-ing perfect 	
can I not couple?
can you not couple?
can she not couple?
can we not couple?
can you not couple?
can they not couple? 	can I not be coupling?
can you not be coupling?
can she not be coupling?
can we not be coupling?
can you not be coupling?
can they not be coupling? 	can I not have coupled?
can you not have coupled?
can she not have coupled?
can we not have coupled?
can you not have coupled?
can they not have coupled? 	can I not have been coupling?
can you not have been coupling?
can she not have been coupling?
can we not have been coupling?
can you not have been coupling?
can they not have been coupling?