I could dwell you could dwell he could dwell we could dwell you could dwell they could dwell
V-ing form
I could be dwelling you could be dwelling he could be dwelling we could be dwelling you could be dwelling they could be dwelling
Perfect
I could have dwelt, dwelled you could have dwelt, dwelled he could have dwelt, dwelled we could have dwelt, dwelled you could have dwelt, dwelled they could have dwelt, dwelled
V-ing perfect
I could have been dwelling you could have been dwelling he could have been dwelling we could have been dwelling you could have been dwelling they could have been dwelling
Negation
Simple form
I couldn't dwell you couldn't dwell he couldn't dwell we couldn't dwell you couldn't dwell they couldn't dwell
V-ing form
I couldn't be dwelling you couldn't be dwelling he couldn't be dwelling we couldn't be dwelling you couldn't be dwelling they couldn't be dwelling
Perfect
I couldn't have dwelt, dwelled you couldn't have dwelt, dwelled he couldn't have dwelt, dwelled we couldn't have dwelt, dwelled you couldn't have dwelt, dwelled they couldn't have dwelt, dwelled
V-ing perfect
I couldn't have been dwelling you couldn't have been dwelling he couldn't have been dwelling we couldn't have been dwelling you couldn't have been dwelling they couldn't have been dwelling
Interrogative form
Simple form
could I dwell? could you dwell? could he dwell? could we dwell? could you dwell? could they dwell?
V-ing form
could I be dwelling? could you be dwelling? could he be dwelling? could we be dwelling? could you be dwelling? could they be dwelling?
Perfect
could I have dwelt, dwelled? could you have dwelt, dwelled? could he have dwelt, dwelled? could we have dwelt, dwelled? could you have dwelt, dwelled? could they have dwelt, dwelled?
V-ing perfect
could I have been dwelling? could you have been dwelling? could he have been dwelling? could we have been dwelling? could you have been dwelling? could they have been dwelling?
Interro-negative form
Simple form
couldn't I dwell? couldn't you dwell? couldn't he dwell? couldn't we dwell? couldn't you dwell? couldn't they dwell?
V-ing form
couldn't I be dwelling? couldn't you be dwelling? couldn't he be dwelling? couldn't we be dwelling? couldn't you be dwelling? couldn't they be dwelling?
Perfect
couldn't I have dwelt, dwelled? couldn't you have dwelt, dwelled? couldn't he have dwelt, dwelled? couldn't we have dwelt, dwelled? couldn't you have dwelt, dwelled? couldn't they have dwelt, dwelled?
V-ing perfect
couldn't I have been dwelling? couldn't you have been dwelling? couldn't he have been dwelling? couldn't we have been dwelling? couldn't you have been dwelling? couldn't they have been dwelling?