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 can't taxi you can't taxi he can't taxi we can't taxi you can't taxi they can't taxi	I can't be taxiing you can't be taxiing he can't be taxiing we can't be taxiing you can't be taxiing they can't be taxiing
Perfect	V-ing perfect
I can't have taxied you can't have taxied he can't have taxied we can't have taxied you can't have taxied they can't have taxied	I can't have been taxiing you can't have been taxiing he can't have been taxiing we can't have been taxiing you can't have been taxiing they can't 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't I taxi? can't you taxi? can't he taxi? can't we taxi? can't you taxi? can't they taxi?	can't I be taxiing? can't you be taxiing? can't he be taxiing? can't we be taxiing? can't you be taxiing? can't they be taxiing?
Perfect	V-ing perfect
can't I have taxied? can't you have taxied? can't he have taxied? can't we have taxied? can't you have taxied? can't they have taxied?	can't I have been taxiing? can't you have been taxiing? can't he have been taxiing? can't we have been taxiing? can't you have been taxiing? can't they have been taxiing?