can punctuate
Regular verb: punctuate - punctuated- punctuated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can punctuate
you can punctuate
he can punctuate
we can punctuate
you can punctuate
they can punctuate 	I can be punctuating
you can be punctuating
he can be punctuating
we can be punctuating
you can be punctuating
they can be punctuating	I can have punctuated
you can have punctuated
he can have punctuated
we can have punctuated
you can have punctuated
they can have punctuated	I can have been punctuating
you can have been punctuating
he can have been punctuating
we can have been punctuating
you can have been punctuating
they can have been punctuating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot punctuate
you cannot punctuate
he cannot punctuate
we cannot punctuate
you cannot punctuate
they cannot punctuate 	I cannot be punctuating
you cannot be punctuating
he cannot be punctuating
we cannot be punctuating
you cannot be punctuating
they cannot be punctuating	I cannot have punctuated
you cannot have punctuated
he cannot have punctuated
we cannot have punctuated
you cannot have punctuated
they cannot have punctuated	I cannot have been punctuating
you cannot have been punctuating
he cannot have been punctuating
we cannot have been punctuating
you cannot have been punctuating
they cannot have been punctuating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I punctuate?
can you punctuate?
can he punctuate?
can we punctuate?
can you punctuate?
can they punctuate? 	can I be punctuating?
can you be punctuating?
can he be punctuating?
can we be punctuating?
can you be punctuating?
can they be punctuating? 	can I have punctuated?
can you have punctuated?
can he have punctuated?
can we have punctuated?
can you have punctuated?
can they have punctuated? 	can I have been punctuating?
can you have been punctuating?
can he have been punctuating?
can we have been punctuating?
can you have been punctuating?
can they have been punctuating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not punctuate?
can you not punctuate?
can he not punctuate?
can we not punctuate?
can you not punctuate?
can they not punctuate? 	can I not be punctuating?
can you not be punctuating?
can he not be punctuating?
can we not be punctuating?
can you not be punctuating?
can they not be punctuating? 	can I not have punctuated?
can you not have punctuated?
can he not have punctuated?
can we not have punctuated?
can you not have punctuated?
can they not have punctuated? 	can I not have been punctuating?
can you not have been punctuating?
can he not have been punctuating?
can we not have been punctuating?
can you not have been punctuating?
can they not have been punctuating?