English verb conjugation
CAN UNSHELL

Regular verb: unshell - unshelled - unshelled

Affirmation

Simple form	V-ing form
I can unshell you can unshell he can unshell we can unshell you can unshell they can unshell	I can be unshelling you can be unshelling he 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 he 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 he 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 can't unshell you can't unshell he can't unshell we can't unshell you can't unshell they can't unshell	I can't be unshelling you can't be unshelling he can't be unshelling we can't be unshelling you can't be unshelling they can't be unshelling
Perfect	V-ing perfect
I can't have unshelled you can't have unshelled he can't have unshelled we can't have unshelled you can't have unshelled they can't have unshelled	I can't have been unshelling you can't have been unshelling he can't have been unshelling we can't have been unshelling you can't have been unshelling they can't have been unshelling

Interrogative form

Simple form	V-ing form
can I unshell? can you unshell? can he unshell? can we unshell? can you unshell? can they unshell?	can I be unshelling? can you be unshelling? can he 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 he 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 he 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't I unshell? can't you unshell? can't he unshell? can't we unshell? can't you unshell? can't they unshell?	can't I be unshelling? can't you be unshelling? can't he be unshelling? can't we be unshelling? can't you be unshelling? can't they be unshelling?
Perfect	V-ing perfect
can't I have unshelled? can't you have unshelled? can't he have unshelled? can't we have unshelled? can't you have unshelled? can't they have unshelled?	can't I have been unshelling? can't you have been unshelling? can't he have been unshelling? can't we have been unshelling? can't you have been unshelling? can't they have been unshelling?