English verb conjugation
CAN BACKFLIP

Regular verb: backflip - backfliped - backfliped

Affirmation

Simple form	V-ing form
I can backflip you can backflip he can backflip we can backflip you can backflip they can backflip	I can be backfliping you can be backfliping he can be backfliping we can be backfliping you can be backfliping they can be backfliping
Perfect	V-ing perfect
I can have backfliped you can have backfliped he can have backfliped we can have backfliped you can have backfliped they can have backfliped	I can have been backfliping you can have been backfliping he can have been backfliping we can have been backfliping you can have been backfliping they can have been backfliping

Negation

Simple form	V-ing form
I cannot backflip you cannot backflip he cannot backflip we cannot backflip you cannot backflip they cannot backflip	I cannot be backfliping you cannot be backfliping he cannot be backfliping we cannot be backfliping you cannot be backfliping they cannot be backfliping
Perfect	V-ing perfect
I cannot have backfliped you cannot have backfliped he cannot have backfliped we cannot have backfliped you cannot have backfliped they cannot have backfliped	I cannot have been backfliping you cannot have been backfliping he cannot have been backfliping we cannot have been backfliping you cannot have been backfliping they cannot have been backfliping

Interrogative form

Simple form	V-ing form
can I backflip? can you backflip? can he backflip? can we backflip? can you backflip? can they backflip?	can I be backfliping? can you be backfliping? can he be backfliping? can we be backfliping? can you be backfliping? can they be backfliping?
Perfect	V-ing perfect
can I have backfliped? can you have backfliped? can he have backfliped? can we have backfliped? can you have backfliped? can they have backfliped?	can I have been backfliping? can you have been backfliping? can he have been backfliping? can we have been backfliping? can you have been backfliping? can they have been backfliping?

Interro-negative form

Simple form	V-ing form
can I not backflip? can you not backflip? can he not backflip? can we not backflip? can you not backflip? can they not backflip?	can I not be backfliping? can you not be backfliping? can he not be backfliping? can we not be backfliping? can you not be backfliping? can they not be backfliping?
Perfect	V-ing perfect
can I not have backfliped? can you not have backfliped? can he not have backfliped? can we not have backfliped? can you not have backfliped? can they not have backfliped?	can I not have been backfliping? can you not have been backfliping? can he not have been backfliping? can we not have been backfliping? can you not have been backfliping? can they not have been backfliping?