I can scrunch you can scrunch he can scrunch we can scrunch you can scrunch they can scrunch
V-ing form
I can be scrunching you can be scrunching he can be scrunching we can be scrunching you can be scrunching they can be scrunching
Perfect
I can have scrunched you can have scrunched he can have scrunched we can have scrunched you can have scrunched they can have scrunched
V-ing perfect
I can have been scrunching you can have been scrunching he can have been scrunching we can have been scrunching you can have been scrunching they can have been scrunching
Negation
Simple form
I can't scrunch you can't scrunch he can't scrunch we can't scrunch you can't scrunch they can't scrunch
V-ing form
I can't be scrunching you can't be scrunching he can't be scrunching we can't be scrunching you can't be scrunching they can't be scrunching
Perfect
I can't have scrunched you can't have scrunched he can't have scrunched we can't have scrunched you can't have scrunched they can't have scrunched
V-ing perfect
I can't have been scrunching you can't have been scrunching he can't have been scrunching we can't have been scrunching you can't have been scrunching they can't have been scrunching
Interrogative form
Simple form
can I scrunch? can you scrunch? can he scrunch? can we scrunch? can you scrunch? can they scrunch?
V-ing form
can I be scrunching? can you be scrunching? can he be scrunching? can we be scrunching? can you be scrunching? can they be scrunching?
Perfect
can I have scrunched? can you have scrunched? can he have scrunched? can we have scrunched? can you have scrunched? can they have scrunched?
V-ing perfect
can I have been scrunching? can you have been scrunching? can he have been scrunching? can we have been scrunching? can you have been scrunching? can they have been scrunching?
Interro-negative form
Simple form
can't I scrunch? can't you scrunch? can't he scrunch? can't we scrunch? can't you scrunch? can't they scrunch?
V-ing form
can't I be scrunching? can't you be scrunching? can't he be scrunching? can't we be scrunching? can't you be scrunching? can't they be scrunching?
Perfect
can't I have scrunched? can't you have scrunched? can't he have scrunched? can't we have scrunched? can't you have scrunched? can't they have scrunched?
V-ing perfect
can't I have been scrunching? can't you have been scrunching? can't he have been scrunching? can't we have been scrunching? can't you have been scrunching? can't they have been scrunching?