English verb conjugation
COULD PROROGUE

Regular verb: prorogue - prorogued - prorogued

Affirmation

Simple form	V-ing form
I could prorogue you could prorogue he could prorogue we could prorogue you could prorogue they could prorogue	I could be proroguing you could be proroguing he could be proroguing we could be proroguing you could be proroguing they could be proroguing
Perfect	V-ing perfect
I could have prorogued you could have prorogued he could have prorogued we could have prorogued you could have prorogued they could have prorogued	I could have been proroguing you could have been proroguing he could have been proroguing we could have been proroguing you could have been proroguing they could have been proroguing

Negation

Simple form	V-ing form
I could not prorogue you could not prorogue he could not prorogue we could not prorogue you could not prorogue they could not prorogue	I could not be proroguing you could not be proroguing he could not be proroguing we could not be proroguing you could not be proroguing they could not be proroguing
Perfect	V-ing perfect
I could not have prorogued you could not have prorogued he could not have prorogued we could not have prorogued you could not have prorogued they could not have prorogued	I could not have been proroguing you could not have been proroguing he could not have been proroguing we could not have been proroguing you could not have been proroguing they could not have been proroguing

Interrogative form

Simple form	V-ing form
could I prorogue? could you prorogue? could he prorogue? could we prorogue? could you prorogue? could they prorogue?	could I be proroguing? could you be proroguing? could he be proroguing? could we be proroguing? could you be proroguing? could they be proroguing?
Perfect	V-ing perfect
could I have prorogued? could you have prorogued? could he have prorogued? could we have prorogued? could you have prorogued? could they have prorogued?	could I have been proroguing? could you have been proroguing? could he have been proroguing? could we have been proroguing? could you have been proroguing? could they have been proroguing?

Interro-negative form

Simple form	V-ing form
could I not prorogue? could you not prorogue? could he not prorogue? could we not prorogue? could you not prorogue? could they not prorogue?	could I not be proroguing? could you not be proroguing? could he not be proroguing? could we not be proroguing? could you not be proroguing? could they not be proroguing?
Perfect	V-ing perfect
could I not have prorogued? could you not have prorogued? could he not have prorogued? could we not have prorogued? could you not have prorogued? could they not have prorogued?	could I not have been proroguing? could you not have been proroguing? could he not have been proroguing? could we not have been proroguing? could you not have been proroguing? could they not have been proroguing?