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