English verb conjugation
CAN REQUEST

Regular verb: request - requested - requested

Affirmation

Simple form	V-ing form
I can request you can request she can request we can request you can request they can request	I can be requesting you can be requesting she can be requesting we can be requesting you can be requesting they can be requesting
Perfect	V-ing perfect
I can have requested you can have requested she can have requested we can have requested you can have requested they can have requested	I can have been requesting you can have been requesting she can have been requesting we can have been requesting you can have been requesting they can have been requesting

Negation

Simple form	V-ing form
I cannot request you cannot request she cannot request we cannot request you cannot request they cannot request	I cannot be requesting you cannot be requesting she cannot be requesting we cannot be requesting you cannot be requesting they cannot be requesting
Perfect	V-ing perfect
I cannot have requested you cannot have requested she cannot have requested we cannot have requested you cannot have requested they cannot have requested	I cannot have been requesting you cannot have been requesting she cannot have been requesting we cannot have been requesting you cannot have been requesting they cannot have been requesting

Interrogative form

Simple form	V-ing form
can I request? can you request? can she request? can we request? can you request? can they request?	can I be requesting? can you be requesting? can she be requesting? can we be requesting? can you be requesting? can they be requesting?
Perfect	V-ing perfect
can I have requested? can you have requested? can she have requested? can we have requested? can you have requested? can they have requested?	can I have been requesting? can you have been requesting? can she have been requesting? can we have been requesting? can you have been requesting? can they have been requesting?

Interro-negative form

Simple form	V-ing form
can I not request? can you not request? can she not request? can we not request? can you not request? can they not request?	can I not be requesting? can you not be requesting? can she not be requesting? can we not be requesting? can you not be requesting? can they not be requesting?
Perfect	V-ing perfect
can I not have requested? can you not have requested? can she not have requested? can we not have requested? can you not have requested? can they not have requested?	can I not have been requesting? can you not have been requesting? can she not have been requesting? can we not have been requesting? can you not have been requesting? can they not have been requesting?