I can unravel you can unravel he can unravel we can unravel you can unravel they can unravel
V-ing form
I can be unravelling you can be unravelling he can be unravelling we can be unravelling you can be unravelling they can be unravelling
Perfect
I can have unravelled you can have unravelled he can have unravelled we can have unravelled you can have unravelled they can have unravelled
V-ing perfect
I can have been unravelling you can have been unravelling he can have been unravelling we can have been unravelling you can have been unravelling they can have been unravelling
Negation
Simple form
I can't unravel you can't unravel he can't unravel we can't unravel you can't unravel they can't unravel
V-ing form
I can't be unravelling you can't be unravelling he can't be unravelling we can't be unravelling you can't be unravelling they can't be unravelling
Perfect
I can't have unravelled you can't have unravelled he can't have unravelled we can't have unravelled you can't have unravelled they can't have unravelled
V-ing perfect
I can't have been unravelling you can't have been unravelling he can't have been unravelling we can't have been unravelling you can't have been unravelling they can't have been unravelling
Interrogative form
Simple form
can I unravel? can you unravel? can he unravel? can we unravel? can you unravel? can they unravel?
V-ing form
can I be unravelling? can you be unravelling? can he be unravelling? can we be unravelling? can you be unravelling? can they be unravelling?
Perfect
can I have unravelled? can you have unravelled? can he have unravelled? can we have unravelled? can you have unravelled? can they have unravelled?
V-ing perfect
can I have been unravelling? can you have been unravelling? can he have been unravelling? can we have been unravelling? can you have been unravelling? can they have been unravelling?
Interro-negative form
Simple form
can't I unravel? can't you unravel? can't he unravel? can't we unravel? can't you unravel? can't they unravel?
V-ing form
can't I be unravelling? can't you be unravelling? can't he be unravelling? can't we be unravelling? can't you be unravelling? can't they be unravelling?
Perfect
can't I have unravelled? can't you have unravelled? can't he have unravelled? can't we have unravelled? can't you have unravelled? can't they have unravelled?
V-ing perfect
can't I have been unravelling? can't you have been unravelling? can't he have been unravelling? can't we have been unravelling? can't you have been unravelling? can't they have been unravelling?