English verb conjugation
COULD QUARTER

Regular verb: quarter - quartered - quartered

Affirmation

Simple form	V-ing form
I could quarter you could quarter he could quarter we could quarter you could quarter they could quarter	I could be quartering you could be quartering he could be quartering we could be quartering you could be quartering they could be quartering
Perfect	V-ing perfect
I could have quartered you could have quartered he could have quartered we could have quartered you could have quartered they could have quartered	I could have been quartering you could have been quartering he could have been quartering we could have been quartering you could have been quartering they could have been quartering

Negation

Simple form	V-ing form
I couldn't quarter you couldn't quarter he couldn't quarter we couldn't quarter you couldn't quarter they couldn't quarter	I couldn't be quartering you couldn't be quartering he couldn't be quartering we couldn't be quartering you couldn't be quartering they couldn't be quartering
Perfect	V-ing perfect
I couldn't have quartered you couldn't have quartered he couldn't have quartered we couldn't have quartered you couldn't have quartered they couldn't have quartered	I couldn't have been quartering you couldn't have been quartering he couldn't have been quartering we couldn't have been quartering you couldn't have been quartering they couldn't have been quartering

Interrogative form

Simple form	V-ing form
could I quarter? could you quarter? could he quarter? could we quarter? could you quarter? could they quarter?	could I be quartering? could you be quartering? could he be quartering? could we be quartering? could you be quartering? could they be quartering?
Perfect	V-ing perfect
could I have quartered? could you have quartered? could he have quartered? could we have quartered? could you have quartered? could they have quartered?	could I have been quartering? could you have been quartering? could he have been quartering? could we have been quartering? could you have been quartering? could they have been quartering?

Interro-negative form

Simple form	V-ing form
couldn't I quarter? couldn't you quarter? couldn't he quarter? couldn't we quarter? couldn't you quarter? couldn't they quarter?	couldn't I be quartering? couldn't you be quartering? couldn't he be quartering? couldn't we be quartering? couldn't you be quartering? couldn't they be quartering?
Perfect	V-ing perfect
couldn't I have quartered? couldn't you have quartered? couldn't he have quartered? couldn't we have quartered? couldn't you have quartered? couldn't they have quartered?	couldn't I have been quartering? couldn't you have been quartering? couldn't he have been quartering? couldn't we have been quartering? couldn't you have been quartering? couldn't they have been quartering?