I could reside you could reside he could reside we could reside you could reside they could reside
V-ing form
I could be residing you could be residing he could be residing we could be residing you could be residing they could be residing
Perfect
I could have resided you could have resided he could have resided we could have resided you could have resided they could have resided
V-ing perfect
I could have been residing you could have been residing he could have been residing we could have been residing you could have been residing they could have been residing
Negation
Simple form
I couldn't reside you couldn't reside he couldn't reside we couldn't reside you couldn't reside they couldn't reside
V-ing form
I couldn't be residing you couldn't be residing he couldn't be residing we couldn't be residing you couldn't be residing they couldn't be residing
Perfect
I couldn't have resided you couldn't have resided he couldn't have resided we couldn't have resided you couldn't have resided they couldn't have resided
V-ing perfect
I couldn't have been residing you couldn't have been residing he couldn't have been residing we couldn't have been residing you couldn't have been residing they couldn't have been residing
Interrogative form
Simple form
could I reside? could you reside? could he reside? could we reside? could you reside? could they reside?
V-ing form
could I be residing? could you be residing? could he be residing? could we be residing? could you be residing? could they be residing?
Perfect
could I have resided? could you have resided? could he have resided? could we have resided? could you have resided? could they have resided?
V-ing perfect
could I have been residing? could you have been residing? could he have been residing? could we have been residing? could you have been residing? could they have been residing?
Interro-negative form
Simple form
couldn't I reside? couldn't you reside? couldn't he reside? couldn't we reside? couldn't you reside? couldn't they reside?
V-ing form
couldn't I be residing? couldn't you be residing? couldn't he be residing? couldn't we be residing? couldn't you be residing? couldn't they be residing?
Perfect
couldn't I have resided? couldn't you have resided? couldn't he have resided? couldn't we have resided? couldn't you have resided? couldn't they have resided?
V-ing perfect
couldn't I have been residing? couldn't you have been residing? couldn't he have been residing? couldn't we have been residing? couldn't you have been residing? couldn't they have been residing?