English verb conjugation
CAN BACKSTOP

Regular verb: backstop - backstoped - backstoped

Affirmation

Simple form	V-ing form
I can backstop you can backstop he can backstop we can backstop you can backstop they can backstop	I can be backstoping you can be backstoping he can be backstoping we can be backstoping you can be backstoping they can be backstoping
Perfect	V-ing perfect
I can have backstoped you can have backstoped he can have backstoped we can have backstoped you can have backstoped they can have backstoped	I can have been backstoping you can have been backstoping he can have been backstoping we can have been backstoping you can have been backstoping they can have been backstoping

Negation

Simple form	V-ing form
I can't backstop you can't backstop he can't backstop we can't backstop you can't backstop they can't backstop	I can't be backstoping you can't be backstoping he can't be backstoping we can't be backstoping you can't be backstoping they can't be backstoping
Perfect	V-ing perfect
I can't have backstoped you can't have backstoped he can't have backstoped we can't have backstoped you can't have backstoped they can't have backstoped	I can't have been backstoping you can't have been backstoping he can't have been backstoping we can't have been backstoping you can't have been backstoping they can't have been backstoping

Interrogative form

Simple form	V-ing form
can I backstop? can you backstop? can he backstop? can we backstop? can you backstop? can they backstop?	can I be backstoping? can you be backstoping? can he be backstoping? can we be backstoping? can you be backstoping? can they be backstoping?
Perfect	V-ing perfect
can I have backstoped? can you have backstoped? can he have backstoped? can we have backstoped? can you have backstoped? can they have backstoped?	can I have been backstoping? can you have been backstoping? can he have been backstoping? can we have been backstoping? can you have been backstoping? can they have been backstoping?

Interro-negative form

Simple form	V-ing form
can't I backstop? can't you backstop? can't he backstop? can't we backstop? can't you backstop? can't they backstop?	can't I be backstoping? can't you be backstoping? can't he be backstoping? can't we be backstoping? can't you be backstoping? can't they be backstoping?
Perfect	V-ing perfect
can't I have backstoped? can't you have backstoped? can't he have backstoped? can't we have backstoped? can't you have backstoped? can't they have backstoped?	can't I have been backstoping? can't you have been backstoping? can't he have been backstoping? can't we have been backstoping? can't you have been backstoping? can't they have been backstoping?