I can shadow you can shadow she can shadow we can shadow you can shadow they can shadow
V-ing form
I can be shadowing you can be shadowing she can be shadowing we can be shadowing you can be shadowing they can be shadowing
Perfect
I can have shadowed you can have shadowed she can have shadowed we can have shadowed you can have shadowed they can have shadowed
V-ing perfect
I can have been shadowing you can have been shadowing she can have been shadowing we can have been shadowing you can have been shadowing they can have been shadowing
Negation
Simple form
I can't shadow you can't shadow she can't shadow we can't shadow you can't shadow they can't shadow
V-ing form
I can't be shadowing you can't be shadowing she can't be shadowing we can't be shadowing you can't be shadowing they can't be shadowing
Perfect
I can't have shadowed you can't have shadowed she can't have shadowed we can't have shadowed you can't have shadowed they can't have shadowed
V-ing perfect
I can't have been shadowing you can't have been shadowing she can't have been shadowing we can't have been shadowing you can't have been shadowing they can't have been shadowing
Interrogative form
Simple form
can I shadow? can you shadow? can she shadow? can we shadow? can you shadow? can they shadow?
V-ing form
can I be shadowing? can you be shadowing? can she be shadowing? can we be shadowing? can you be shadowing? can they be shadowing?
Perfect
can I have shadowed? can you have shadowed? can she have shadowed? can we have shadowed? can you have shadowed? can they have shadowed?
V-ing perfect
can I have been shadowing? can you have been shadowing? can she have been shadowing? can we have been shadowing? can you have been shadowing? can they have been shadowing?
Interro-negative form
Simple form
can't I shadow? can't you shadow? can't she shadow? can't we shadow? can't you shadow? can't they shadow?
V-ing form
can't I be shadowing? can't you be shadowing? can't she be shadowing? can't we be shadowing? can't you be shadowing? can't they be shadowing?
Perfect
can't I have shadowed? can't you have shadowed? can't she have shadowed? can't we have shadowed? can't you have shadowed? can't they have shadowed?
V-ing perfect
can't I have been shadowing? can't you have been shadowing? can't she have been shadowing? can't we have been shadowing? can't you have been shadowing? can't they have been shadowing?