can conjugate
Regular verb: conjugate - conjugated- conjugated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can conjugate
you can conjugate
he can conjugate
we can conjugate
you can conjugate
they can conjugate 	I can be conjugating
you can be conjugating
he can be conjugating
we can be conjugating
you can be conjugating
they can be conjugating	I can have conjugated
you can have conjugated
he can have conjugated
we can have conjugated
you can have conjugated
they can have conjugated	I can have been conjugating
you can have been conjugating
he can have been conjugating
we can have been conjugating
you can have been conjugating
they can have been conjugating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot conjugate
you cannot conjugate
he cannot conjugate
we cannot conjugate
you cannot conjugate
they cannot conjugate 	I cannot be conjugating
you cannot be conjugating
he cannot be conjugating
we cannot be conjugating
you cannot be conjugating
they cannot be conjugating	I cannot have conjugated
you cannot have conjugated
he cannot have conjugated
we cannot have conjugated
you cannot have conjugated
they cannot have conjugated	I cannot have been conjugating
you cannot have been conjugating
he cannot have been conjugating
we cannot have been conjugating
you cannot have been conjugating
they cannot have been conjugating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I conjugate?
can you conjugate?
can he conjugate?
can we conjugate?
can you conjugate?
can they conjugate? 	can I be conjugating?
can you be conjugating?
can he be conjugating?
can we be conjugating?
can you be conjugating?
can they be conjugating? 	can I have conjugated?
can you have conjugated?
can he have conjugated?
can we have conjugated?
can you have conjugated?
can they have conjugated? 	can I have been conjugating?
can you have been conjugating?
can he have been conjugating?
can we have been conjugating?
can you have been conjugating?
can they have been conjugating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not conjugate?
can you not conjugate?
can he not conjugate?
can we not conjugate?
can you not conjugate?
can they not conjugate? 	can I not be conjugating?
can you not be conjugating?
can he not be conjugating?
can we not be conjugating?
can you not be conjugating?
can they not be conjugating? 	can I not have conjugated?
can you not have conjugated?
can he not have conjugated?
can we not have conjugated?
can you not have conjugated?
can they not have conjugated? 	can I not have been conjugating?
can you not have been conjugating?
can he not have been conjugating?
can we not have been conjugating?
can you not have been conjugating?
can they not have been conjugating?