I can backstop you can backstop she can backstop we can backstop you can backstop they can backstop
Forma con V-ing
I can be backstoping you can be backstoping she can be backstoping we can be backstoping you can be backstoping they can be backstoping
Perfecto
I can have backstoped you can have backstoped she can have backstoped we can have backstoped you can have backstoped they can have backstoped
Perfecto con V-ing
I can have been backstoping you can have been backstoping she can have been backstoping we can have been backstoping you can have been backstoping they can have been backstoping
Negación
Forma simple
I can't backstop you can't backstop she can't backstop we can't backstop you can't backstop they can't backstop
Forma con V-ing
I can't be backstoping you can't be backstoping she can't be backstoping we can't be backstoping you can't be backstoping they can't be backstoping
Perfecto
I can't have backstoped you can't have backstoped she can't have backstoped we can't have backstoped you can't have backstoped they can't have backstoped
Perfecto con V-ing
I can't have been backstoping you can't have been backstoping she can't have been backstoping we can't have been backstoping you can't have been backstoping they can't have been backstoping
Forma interrogativa
Forma simple
can I backstop? can you backstop? can she backstop? can we backstop? can you backstop? can they backstop?
Forma con V-ing
can I be backstoping? can you be backstoping? can she be backstoping? can we be backstoping? can you be backstoping? can they be backstoping?
Perfecto
can I have backstoped? can you have backstoped? can she have backstoped? can we have backstoped? can you have backstoped? can they have backstoped?
Perfecto con V-ing
can I have been backstoping? can you have been backstoping? can she have been backstoping? can we have been backstoping? can you have been backstoping? can they have been backstoping?
Forma interro-negativa
Forma simple
can't I backstop? can't you backstop? can't she backstop? can't we backstop? can't you backstop? can't they backstop?
Forma con V-ing
can't I be backstoping? can't you be backstoping? can't she be backstoping? can't we be backstoping? can't you be backstoping? can't they be backstoping?
Perfecto
can't I have backstoped? can't you have backstoped? can't she have backstoped? can't we have backstoped? can't you have backstoped? can't they have backstoped?
Perfecto con V-ing
can't I have been backstoping? can't you have been backstoping? can't she have been backstoping? can't we have been backstoping? can't you have been backstoping? can't they have been backstoping?