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 couldn't prorogue you couldn't prorogue he couldn't prorogue we couldn't prorogue you couldn't prorogue they couldn't prorogue	I couldn't be proroguing you couldn't be proroguing he couldn't be proroguing we couldn't be proroguing you couldn't be proroguing they couldn't be proroguing
Perfect	V-ing perfect
I couldn't have prorogued you couldn't have prorogued he couldn't have prorogued we couldn't have prorogued you couldn't have prorogued they couldn't have prorogued	I couldn't have been proroguing you couldn't have been proroguing he couldn't have been proroguing we couldn't have been proroguing you couldn't have been proroguing they couldn't 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
couldn't I prorogue? couldn't you prorogue? couldn't he prorogue? couldn't we prorogue? couldn't you prorogue? couldn't they prorogue?	couldn't I be proroguing? couldn't you be proroguing? couldn't he be proroguing? couldn't we be proroguing? couldn't you be proroguing? couldn't they be proroguing?
Perfect	V-ing perfect
couldn't I have prorogued? couldn't you have prorogued? couldn't he have prorogued? couldn't we have prorogued? couldn't you have prorogued? couldn't they have prorogued?	couldn't I have been proroguing? couldn't you have been proroguing? couldn't he have been proroguing? couldn't we have been proroguing? couldn't you have been proroguing? couldn't they have been proroguing?