I could dechlorinate you could dechlorinate she could dechlorinate we could dechlorinate you could dechlorinate they could dechlorinate
V-ing form
I could be dechlorinating you could be dechlorinating she could be dechlorinating we could be dechlorinating you could be dechlorinating they could be dechlorinating
Perfect
I could have dechlorinated you could have dechlorinated she could have dechlorinated we could have dechlorinated you could have dechlorinated they could have dechlorinated
V-ing perfect
I could have been dechlorinating you could have been dechlorinating she could have been dechlorinating we could have been dechlorinating you could have been dechlorinating they could have been dechlorinating
Negation
Simple form
I couldn't dechlorinate you couldn't dechlorinate she couldn't dechlorinate we couldn't dechlorinate you couldn't dechlorinate they couldn't dechlorinate
V-ing form
I couldn't be dechlorinating you couldn't be dechlorinating she couldn't be dechlorinating we couldn't be dechlorinating you couldn't be dechlorinating they couldn't be dechlorinating
Perfect
I couldn't have dechlorinated you couldn't have dechlorinated she couldn't have dechlorinated we couldn't have dechlorinated you couldn't have dechlorinated they couldn't have dechlorinated
V-ing perfect
I couldn't have been dechlorinating you couldn't have been dechlorinating she couldn't have been dechlorinating we couldn't have been dechlorinating you couldn't have been dechlorinating they couldn't have been dechlorinating
Interrogative form
Simple form
could I dechlorinate? could you dechlorinate? could she dechlorinate? could we dechlorinate? could you dechlorinate? could they dechlorinate?
V-ing form
could I be dechlorinating? could you be dechlorinating? could she be dechlorinating? could we be dechlorinating? could you be dechlorinating? could they be dechlorinating?
Perfect
could I have dechlorinated? could you have dechlorinated? could she have dechlorinated? could we have dechlorinated? could you have dechlorinated? could they have dechlorinated?
V-ing perfect
could I have been dechlorinating? could you have been dechlorinating? could she have been dechlorinating? could we have been dechlorinating? could you have been dechlorinating? could they have been dechlorinating?
Interro-negative form
Simple form
couldn't I dechlorinate? couldn't you dechlorinate? couldn't she dechlorinate? couldn't we dechlorinate? couldn't you dechlorinate? couldn't they dechlorinate?
V-ing form
couldn't I be dechlorinating? couldn't you be dechlorinating? couldn't she be dechlorinating? couldn't we be dechlorinating? couldn't you be dechlorinating? couldn't they be dechlorinating?
Perfect
couldn't I have dechlorinated? couldn't you have dechlorinated? couldn't she have dechlorinated? couldn't we have dechlorinated? couldn't you have dechlorinated? couldn't they have dechlorinated?
V-ing perfect
couldn't I have been dechlorinating? couldn't you have been dechlorinating? couldn't she have been dechlorinating? couldn't we have been dechlorinating? couldn't you have been dechlorinating? couldn't they have been dechlorinating?