I can debase you can debase he can debase we can debase you can debase they can debase
V-ing form
I can be debasing you can be debasing he can be debasing we can be debasing you can be debasing they can be debasing
Perfect
I can have debased you can have debased he can have debased we can have debased you can have debased they can have debased
V-ing perfect
I can have been debasing you can have been debasing he can have been debasing we can have been debasing you can have been debasing they can have been debasing
Negation
Simple form
I can't debase you can't debase he can't debase we can't debase you can't debase they can't debase
V-ing form
I can't be debasing you can't be debasing he can't be debasing we can't be debasing you can't be debasing they can't be debasing
Perfect
I can't have debased you can't have debased he can't have debased we can't have debased you can't have debased they can't have debased
V-ing perfect
I can't have been debasing you can't have been debasing he can't have been debasing we can't have been debasing you can't have been debasing they can't have been debasing
Interrogative form
Simple form
can I debase? can you debase? can he debase? can we debase? can you debase? can they debase?
V-ing form
can I be debasing? can you be debasing? can he be debasing? can we be debasing? can you be debasing? can they be debasing?
Perfect
can I have debased? can you have debased? can he have debased? can we have debased? can you have debased? can they have debased?
V-ing perfect
can I have been debasing? can you have been debasing? can he have been debasing? can we have been debasing? can you have been debasing? can they have been debasing?
Interro-negative form
Simple form
can't I debase? can't you debase? can't he debase? can't we debase? can't you debase? can't they debase?
V-ing form
can't I be debasing? can't you be debasing? can't he be debasing? can't we be debasing? can't you be debasing? can't they be debasing?
Perfect
can't I have debased? can't you have debased? can't he have debased? can't we have debased? can't you have debased? can't they have debased?
V-ing perfect
can't I have been debasing? can't you have been debasing? can't he have been debasing? can't we have been debasing? can't you have been debasing? can't they have been debasing?