English verb conjugation
CAN CURR

Regular verb: curr - curred - curred

Affirmation

Simple form	V-ing form
I can curr you can curr he can curr we can curr you can curr they can curr	I can be curring you can be curring he can be curring we can be curring you can be curring they can be curring
Perfect	V-ing perfect
I can have curred you can have curred he can have curred we can have curred you can have curred they can have curred	I can have been curring you can have been curring he can have been curring we can have been curring you can have been curring they can have been curring

Negation

Simple form	V-ing form
I can't curr you can't curr he can't curr we can't curr you can't curr they can't curr	I can't be curring you can't be curring he can't be curring we can't be curring you can't be curring they can't be curring
Perfect	V-ing perfect
I can't have curred you can't have curred he can't have curred we can't have curred you can't have curred they can't have curred	I can't have been curring you can't have been curring he can't have been curring we can't have been curring you can't have been curring they can't have been curring

Interrogative form

Simple form	V-ing form
can I curr? can you curr? can he curr? can we curr? can you curr? can they curr?	can I be curring? can you be curring? can he be curring? can we be curring? can you be curring? can they be curring?
Perfect	V-ing perfect
can I have curred? can you have curred? can he have curred? can we have curred? can you have curred? can they have curred?	can I have been curring? can you have been curring? can he have been curring? can we have been curring? can you have been curring? can they have been curring?

Interro-negative form

Simple form	V-ing form
can't I curr? can't you curr? can't he curr? can't we curr? can't you curr? can't they curr?	can't I be curring? can't you be curring? can't he be curring? can't we be curring? can't you be curring? can't they be curring?
Perfect	V-ing perfect
can't I have curred? can't you have curred? can't he have curred? can't we have curred? can't you have curred? can't they have curred?	can't I have been curring? can't you have been curring? can't he have been curring? can't we have been curring? can't you have been curring? can't they have been curring?