could request
Regular verb: request - requested- requested

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could request
you could request
he could request
we could request
you could request
they could request 	I could be requesting
you could be requesting
he could be requesting
we could be requesting
you could be requesting
they could be requesting	I could have requested
you could have requested
he could have requested
we could have requested
you could have requested
they could have requested	I could have been requesting
you could have been requesting
he could have been requesting
we could have been requesting
you could have been requesting
they could have been requesting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not request
you could not request
he could not request
we could not request
you could not request
they could not request 	I could not be requesting
you could not be requesting
he could not be requesting
we could not be requesting
you could not be requesting
they could not be requesting	I could not have requested
you could not have requested
he could not have requested
we could not have requested
you could not have requested
they could not have requested	I could not have been requesting
you could not have been requesting
he could not have been requesting
we could not have been requesting
you could not have been requesting
they could not have been requesting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I request?
could you request?
could he request?
could we request?
could you request?
could they request? 	could I be requesting?
could you be requesting?
could he be requesting?
could we be requesting?
could you be requesting?
could they be requesting? 	could I have requested?
could you have requested?
could he have requested?
could we have requested?
could you have requested?
could they have requested? 	could I have been requesting?
could you have been requesting?
could he have been requesting?
could we have been requesting?
could you have been requesting?
could they have been requesting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not request?
could you not request?
could he not request?
could we not request?
could you not request?
could they not request? 	could I not be requesting?
could you not be requesting?
could he not be requesting?
could we not be requesting?
could you not be requesting?
could they not be requesting? 	could I not have requested?
could you not have requested?
could he not have requested?
could we not have requested?
could you not have requested?
could they not have requested? 	could I not have been requesting?
could you not have been requesting?
could he not have been requesting?
could we not have been requesting?
could you not have been requesting?
could they not have been requesting?