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