English verb conjugation
CAN BACKFIT

Irregular verb: backfit - backfit, backfitted - backfit, backfitted

Affirmation

Simple form	V-ing form
I can backfit you can backfit she can backfit we can backfit you can backfit they can backfit	I can be backfiting you can be backfiting she can be backfiting we can be backfiting you can be backfiting they can be backfiting
Perfect	V-ing perfect
I can have backfit, backfitted you can have backfit, backfitted she can have backfit, backfitted we can have backfit, backfitted you can have backfit, backfitted they can have backfit, backfitted	I can have been backfiting you can have been backfiting she can have been backfiting we can have been backfiting you can have been backfiting they can have been backfiting

Negation

Simple form	V-ing form
I can't backfit you can't backfit she can't backfit we can't backfit you can't backfit they can't backfit	I can't be backfiting you can't be backfiting she can't be backfiting we can't be backfiting you can't be backfiting they can't be backfiting
Perfect	V-ing perfect
I can't have backfit, backfitted you can't have backfit, backfitted she can't have backfit, backfitted we can't have backfit, backfitted you can't have backfit, backfitted they can't have backfit, backfitted	I can't have been backfiting you can't have been backfiting she can't have been backfiting we can't have been backfiting you can't have been backfiting they can't have been backfiting

Interrogative form

Simple form	V-ing form
can I backfit? can you backfit? can she backfit? can we backfit? can you backfit? can they backfit?	can I be backfiting? can you be backfiting? can she be backfiting? can we be backfiting? can you be backfiting? can they be backfiting?
Perfect	V-ing perfect
can I have backfit, backfitted? can you have backfit, backfitted? can she have backfit, backfitted? can we have backfit, backfitted? can you have backfit, backfitted? can they have backfit, backfitted?	can I have been backfiting? can you have been backfiting? can she have been backfiting? can we have been backfiting? can you have been backfiting? can they have been backfiting?

Interro-negative form

Simple form	V-ing form
can't I backfit? can't you backfit? can't she backfit? can't we backfit? can't you backfit? can't they backfit?	can't I be backfiting? can't you be backfiting? can't she be backfiting? can't we be backfiting? can't you be backfiting? can't they be backfiting?
Perfect	V-ing perfect
can't I have backfit, backfitted? can't you have backfit, backfitted? can't she have backfit, backfitted? can't we have backfit, backfitted? can't you have backfit, backfitted? can't they have backfit, backfitted?	can't I have been backfiting? can't you have been backfiting? can't she have been backfiting? can't we have been backfiting? can't you have been backfiting? can't they have been backfiting?