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