English verb conjugation
CAN UNSHELL

Regular verb: unshell - unshelled - unshelled

Affirmation

Simple form	V-ing form
I can unshell you can unshell she can unshell we can unshell you can unshell they can unshell	I can be unshelling you can be unshelling she can be unshelling we can be unshelling you can be unshelling they can be unshelling
Perfect	V-ing perfect
I can have unshelled you can have unshelled she can have unshelled we can have unshelled you can have unshelled they can have unshelled	I can have been unshelling you can have been unshelling she can have been unshelling we can have been unshelling you can have been unshelling they can have been unshelling

Negation

Simple form	V-ing form
I cannot unshell you cannot unshell she cannot unshell we cannot unshell you cannot unshell they cannot unshell	I cannot be unshelling you cannot be unshelling she cannot be unshelling we cannot be unshelling you cannot be unshelling they cannot be unshelling
Perfect	V-ing perfect
I cannot have unshelled you cannot have unshelled she cannot have unshelled we cannot have unshelled you cannot have unshelled they cannot have unshelled	I cannot have been unshelling you cannot have been unshelling she cannot have been unshelling we cannot have been unshelling you cannot have been unshelling they cannot have been unshelling

Interrogative form

Simple form	V-ing form
can I unshell? can you unshell? can she unshell? can we unshell? can you unshell? can they unshell?	can I be unshelling? can you be unshelling? can she be unshelling? can we be unshelling? can you be unshelling? can they be unshelling?
Perfect	V-ing perfect
can I have unshelled? can you have unshelled? can she have unshelled? can we have unshelled? can you have unshelled? can they have unshelled?	can I have been unshelling? can you have been unshelling? can she have been unshelling? can we have been unshelling? can you have been unshelling? can they have been unshelling?

Interro-negative form

Simple form	V-ing form
can I not unshell? can you not unshell? can she not unshell? can we not unshell? can you not unshell? can they not unshell?	can I not be unshelling? can you not be unshelling? can she not be unshelling? can we not be unshelling? can you not be unshelling? can they not be unshelling?
Perfect	V-ing perfect
can I not have unshelled? can you not have unshelled? can she not have unshelled? can we not have unshelled? can you not have unshelled? can they not have unshelled?	can I not have been unshelling? can you not have been unshelling? can she not have been unshelling? can we not have been unshelling? can you not have been unshelling? can they not have been unshelling?