I could backstop you could backstop he could backstop we could backstop you could backstop they could backstop
Forme en V-ing
I could be backstoping you could be backstoping he could be backstoping we could be backstoping you could be backstoping they could be backstoping
Perfect
I could have backstoped you could have backstoped he could have backstoped we could have backstoped you could have backstoped they could have backstoped
Perfect en V-ing
I could have been backstoping you could have been backstoping he could have been backstoping we could have been backstoping you could have been backstoping they could have been backstoping
Négation
Forme simple
I couldn't backstop you couldn't backstop he couldn't backstop we couldn't backstop you couldn't backstop they couldn't backstop
Forme en V-ing
I couldn't be backstoping you couldn't be backstoping he couldn't be backstoping we couldn't be backstoping you couldn't be backstoping they couldn't be backstoping
Perfect
I couldn't have backstoped you couldn't have backstoped he couldn't have backstoped we couldn't have backstoped you couldn't have backstoped they couldn't have backstoped
Perfect en V-ing
I couldn't have been backstoping you couldn't have been backstoping he couldn't have been backstoping we couldn't have been backstoping you couldn't have been backstoping they couldn't have been backstoping
Forme interrogative
Forme simple
could I backstop? could you backstop? could he backstop? could we backstop? could you backstop? could they backstop?
Forme en V-ing
could I be backstoping? could you be backstoping? could he be backstoping? could we be backstoping? could you be backstoping? could they be backstoping?
Perfect
could I have backstoped? could you have backstoped? could he have backstoped? could we have backstoped? could you have backstoped? could they have backstoped?
Perfect en V-ing
could I have been backstoping? could you have been backstoping? could he have been backstoping? could we have been backstoping? could you have been backstoping? could they have been backstoping?
Forme interro-négative
Forme simple
couldn't I backstop? couldn't you backstop? couldn't he backstop? couldn't we backstop? couldn't you backstop? couldn't they backstop?
Forme en V-ing
couldn't I be backstoping? couldn't you be backstoping? couldn't he be backstoping? couldn't we be backstoping? couldn't you be backstoping? couldn't they be backstoping?
Perfect
couldn't I have backstoped? couldn't you have backstoped? couldn't he have backstoped? couldn't we have backstoped? couldn't you have backstoped? couldn't they have backstoped?
Perfect en V-ing
couldn't I have been backstoping? couldn't you have been backstoping? couldn't he have been backstoping? couldn't we have been backstoping? couldn't you have been backstoping? couldn't they have been backstoping?