I can uncase you can uncase he can uncase we can uncase you can uncase they can uncase
V-ing form
I can be uncasing you can be uncasing he can be uncasing we can be uncasing you can be uncasing they can be uncasing
Perfect
I can have uncased you can have uncased he can have uncased we can have uncased you can have uncased they can have uncased
V-ing perfect
I can have been uncasing you can have been uncasing he can have been uncasing we can have been uncasing you can have been uncasing they can have been uncasing
Negation
Simple form
I can't uncase you can't uncase he can't uncase we can't uncase you can't uncase they can't uncase
V-ing form
I can't be uncasing you can't be uncasing he can't be uncasing we can't be uncasing you can't be uncasing they can't be uncasing
Perfect
I can't have uncased you can't have uncased he can't have uncased we can't have uncased you can't have uncased they can't have uncased
V-ing perfect
I can't have been uncasing you can't have been uncasing he can't have been uncasing we can't have been uncasing you can't have been uncasing they can't have been uncasing
Interrogative form
Simple form
can I uncase? can you uncase? can he uncase? can we uncase? can you uncase? can they uncase?
V-ing form
can I be uncasing? can you be uncasing? can he be uncasing? can we be uncasing? can you be uncasing? can they be uncasing?
Perfect
can I have uncased? can you have uncased? can he have uncased? can we have uncased? can you have uncased? can they have uncased?
V-ing perfect
can I have been uncasing? can you have been uncasing? can he have been uncasing? can we have been uncasing? can you have been uncasing? can they have been uncasing?
Interro-negative form
Simple form
can't I uncase? can't you uncase? can't he uncase? can't we uncase? can't you uncase? can't they uncase?
V-ing form
can't I be uncasing? can't you be uncasing? can't he be uncasing? can't we be uncasing? can't you be uncasing? can't they be uncasing?
Perfect
can't I have uncased? can't you have uncased? can't he have uncased? can't we have uncased? can't you have uncased? can't they have uncased?
V-ing perfect
can't I have been uncasing? can't you have been uncasing? can't he have been uncasing? can't we have been uncasing? can't you have been uncasing? can't they have been uncasing?