English verb conjugation
CAN BILLET

Regular verb: billet - billeted - billeted

Affirmation

Simple form	V-ing form
I can billet you can billet he can billet we can billet you can billet they can billet	I can be billeting you can be billeting he can be billeting we can be billeting you can be billeting they can be billeting
Perfect	V-ing perfect
I can have billeted you can have billeted he can have billeted we can have billeted you can have billeted they can have billeted	I can have been billeting you can have been billeting he can have been billeting we can have been billeting you can have been billeting they can have been billeting

Negation

Simple form	V-ing form
I can't billet you can't billet he can't billet we can't billet you can't billet they can't billet	I can't be billeting you can't be billeting he can't be billeting we can't be billeting you can't be billeting they can't be billeting
Perfect	V-ing perfect
I can't have billeted you can't have billeted he can't have billeted we can't have billeted you can't have billeted they can't have billeted	I can't have been billeting you can't have been billeting he can't have been billeting we can't have been billeting you can't have been billeting they can't have been billeting

Interrogative form

Simple form	V-ing form
can I billet? can you billet? can he billet? can we billet? can you billet? can they billet?	can I be billeting? can you be billeting? can he be billeting? can we be billeting? can you be billeting? can they be billeting?
Perfect	V-ing perfect
can I have billeted? can you have billeted? can he have billeted? can we have billeted? can you have billeted? can they have billeted?	can I have been billeting? can you have been billeting? can he have been billeting? can we have been billeting? can you have been billeting? can they have been billeting?

Interro-negative form

Simple form	V-ing form
can't I billet? can't you billet? can't he billet? can't we billet? can't you billet? can't they billet?	can't I be billeting? can't you be billeting? can't he be billeting? can't we be billeting? can't you be billeting? can't they be billeting?
Perfect	V-ing perfect
can't I have billeted? can't you have billeted? can't he have billeted? can't we have billeted? can't you have billeted? can't they have billeted?	can't I have been billeting? can't you have been billeting? can't he have been billeting? can't we have been billeting? can't you have been billeting? can't they have been billeting?