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 cannot ravel you cannot ravel he cannot ravel we cannot ravel you cannot ravel they cannot ravel	I cannot be ravelling you cannot be ravelling he cannot be ravelling we cannot be ravelling you cannot be ravelling they cannot be ravelling
Perfect	V-ing perfect
I cannot have ravelled you cannot have ravelled he cannot have ravelled we cannot have ravelled you cannot have ravelled they cannot have ravelled	I cannot have been ravelling you cannot have been ravelling he cannot have been ravelling we cannot have been ravelling you cannot have been ravelling they cannot 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 I not ravel? can you not ravel? can he not ravel? can we not ravel? can you not ravel? can they not ravel?	can I not be ravelling? can you not be ravelling? can he not be ravelling? can we not be ravelling? can you not be ravelling? can they not be ravelling?
Perfect	V-ing perfect
can I not have ravelled? can you not have ravelled? can he not have ravelled? can we not have ravelled? can you not have ravelled? can they not have ravelled?	can I not have been ravelling? can you not have been ravelling? can he not have been ravelling? can we not have been ravelling? can you not have been ravelling? can they not have been ravelling?