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