English verb conjugation
CAN RAVEL

Regular verb: ravel - ravelled - ravelled

Affirmation

Simple form	V-ing form
I can ravel you can ravel he can ravel we can ravel you can ravel they can ravel	I can be ravelling you can be ravelling he can be ravelling we can be ravelling you can be ravelling they can be ravelling
Perfect	V-ing perfect
I can have ravelled you can have ravelled he can have ravelled we can have ravelled you can have ravelled they can have ravelled	I can have been ravelling you can have been ravelling he can have been ravelling we can have been ravelling you can have been ravelling they can have been ravelling

Negation

Simple form	V-ing form
I can't ravel you can't ravel he can't ravel we can't ravel you can't ravel they can't ravel	I can't be ravelling you can't be ravelling he can't be ravelling we can't be ravelling you can't be ravelling they can't be ravelling
Perfect	V-ing perfect
I can't have ravelled you can't have ravelled he can't have ravelled we can't have ravelled you can't have ravelled they can't have ravelled	I can't have been ravelling you can't have been ravelling he can't have been ravelling we can't have been ravelling you can't have been ravelling they can't have been ravelling

Interrogative form

Simple form	V-ing form
can I ravel? can you ravel? can he ravel? can we ravel? can you ravel? can they ravel?	can I be ravelling? can you be ravelling? can he be ravelling? can we be ravelling? can you be ravelling? can they be ravelling?
Perfect	V-ing perfect
can I have ravelled? can you have ravelled? can he have ravelled? can we have ravelled? can you have ravelled? can they have ravelled?	can I have been ravelling? can you have been ravelling? can he have been ravelling? can we have been ravelling? can you have been ravelling? can they have been ravelling?

Interro-negative form

Simple form	V-ing form
can't I ravel? can't you ravel? can't he ravel? can't we ravel? can't you ravel? can't they ravel?	can't I be ravelling? can't you be ravelling? can't he be ravelling? can't we be ravelling? can't you be ravelling? can't they be ravelling?
Perfect	V-ing perfect
can't I have ravelled? can't you have ravelled? can't he have ravelled? can't we have ravelled? can't you have ravelled? can't they have ravelled?	can't I have been ravelling? can't you have been ravelling? can't he have been ravelling? can't we have been ravelling? can't you have been ravelling? can't they have been ravelling?