English verb conjugation
CAN TAXI

Regular verb: taxi - taxied - taxied

Affirmation

Simple form	V-ing form
I can taxi you can taxi he can taxi we can taxi you can taxi they can taxi	I can be taxiing you can be taxiing he can be taxiing we can be taxiing you can be taxiing they can be taxiing
Perfect	V-ing perfect
I can have taxied you can have taxied he can have taxied we can have taxied you can have taxied they can have taxied	I can have been taxiing you can have been taxiing he can have been taxiing we can have been taxiing you can have been taxiing they can have been taxiing

Negation

Simple form	V-ing form
I cannot taxi you cannot taxi he cannot taxi we cannot taxi you cannot taxi they cannot taxi	I cannot be taxiing you cannot be taxiing he cannot be taxiing we cannot be taxiing you cannot be taxiing they cannot be taxiing
Perfect	V-ing perfect
I cannot have taxied you cannot have taxied he cannot have taxied we cannot have taxied you cannot have taxied they cannot have taxied	I cannot have been taxiing you cannot have been taxiing he cannot have been taxiing we cannot have been taxiing you cannot have been taxiing they cannot have been taxiing

Interrogative form

Simple form	V-ing form
can I taxi? can you taxi? can he taxi? can we taxi? can you taxi? can they taxi?	can I be taxiing? can you be taxiing? can he be taxiing? can we be taxiing? can you be taxiing? can they be taxiing?
Perfect	V-ing perfect
can I have taxied? can you have taxied? can he have taxied? can we have taxied? can you have taxied? can they have taxied?	can I have been taxiing? can you have been taxiing? can he have been taxiing? can we have been taxiing? can you have been taxiing? can they have been taxiing?

Interro-negative form

Simple form	V-ing form
can I not taxi? can you not taxi? can he not taxi? can we not taxi? can you not taxi? can they not taxi?	can I not be taxiing? can you not be taxiing? can he not be taxiing? can we not be taxiing? can you not be taxiing? can they not be taxiing?
Perfect	V-ing perfect
can I not have taxied? can you not have taxied? can he not have taxied? can we not have taxied? can you not have taxied? can they not have taxied?	can I not have been taxiing? can you not have been taxiing? can he not have been taxiing? can we not have been taxiing? can you not have been taxiing? can they not have been taxiing?