English verb conjugation
CAN BITTER

Regular verb: bitter - bittered - bittered

Affirmation

Simple form	V-ing form
I can bitter you can bitter he can bitter we can bitter you can bitter they can bitter	I can be bittering you can be bittering he can be bittering we can be bittering you can be bittering they can be bittering
Perfect	V-ing perfect
I can have bittered you can have bittered he can have bittered we can have bittered you can have bittered they can have bittered	I can have been bittering you can have been bittering he can have been bittering we can have been bittering you can have been bittering they can have been bittering

Negation

Simple form	V-ing form
I can't bitter you can't bitter he can't bitter we can't bitter you can't bitter they can't bitter	I can't be bittering you can't be bittering he can't be bittering we can't be bittering you can't be bittering they can't be bittering
Perfect	V-ing perfect
I can't have bittered you can't have bittered he can't have bittered we can't have bittered you can't have bittered they can't have bittered	I can't have been bittering you can't have been bittering he can't have been bittering we can't have been bittering you can't have been bittering they can't have been bittering

Interrogative form

Simple form	V-ing form
can I bitter? can you bitter? can he bitter? can we bitter? can you bitter? can they bitter?	can I be bittering? can you be bittering? can he be bittering? can we be bittering? can you be bittering? can they be bittering?
Perfect	V-ing perfect
can I have bittered? can you have bittered? can he have bittered? can we have bittered? can you have bittered? can they have bittered?	can I have been bittering? can you have been bittering? can he have been bittering? can we have been bittering? can you have been bittering? can they have been bittering?

Interro-negative form

Simple form	V-ing form
can't I bitter? can't you bitter? can't he bitter? can't we bitter? can't you bitter? can't they bitter?	can't I be bittering? can't you be bittering? can't he be bittering? can't we be bittering? can't you be bittering? can't they be bittering?
Perfect	V-ing perfect
can't I have bittered? can't you have bittered? can't he have bittered? can't we have bittered? can't you have bittered? can't they have bittered?	can't I have been bittering? can't you have been bittering? can't he have been bittering? can't we have been bittering? can't you have been bittering? can't they have been bittering?