I can up you can up she can up we can up you can up they can up
V-ing form
I can be upping you can be upping she can be upping we can be upping you can be upping they can be upping
Perfect
I can have upped you can have upped she can have upped we can have upped you can have upped they can have upped
V-ing perfect
I can have been upping you can have been upping she can have been upping we can have been upping you can have been upping they can have been upping
Negation
Simple form
I can't up you can't up she can't up we can't up you can't up they can't up
V-ing form
I can't be upping you can't be upping she can't be upping we can't be upping you can't be upping they can't be upping
Perfect
I can't have upped you can't have upped she can't have upped we can't have upped you can't have upped they can't have upped
V-ing perfect
I can't have been upping you can't have been upping she can't have been upping we can't have been upping you can't have been upping they can't have been upping
Interrogative form
Simple form
can I up? can you up? can she up? can we up? can you up? can they up?
V-ing form
can I be upping? can you be upping? can she be upping? can we be upping? can you be upping? can they be upping?
Perfect
can I have upped? can you have upped? can she have upped? can we have upped? can you have upped? can they have upped?
V-ing perfect
can I have been upping? can you have been upping? can she have been upping? can we have been upping? can you have been upping? can they have been upping?
Interro-negative form
Simple form
can't I up? can't you up? can't she up? can't we up? can't you up? can't they up?
V-ing form
can't I be upping? can't you be upping? can't she be upping? can't we be upping? can't you be upping? can't they be upping?
Perfect
can't I have upped? can't you have upped? can't she have upped? can't we have upped? can't you have upped? can't they have upped?
V-ing perfect
can't I have been upping? can't you have been upping? can't she have been upping? can't we have been upping? can't you have been upping? can't they have been upping?