I could wade you could wade she could wade we could wade you could wade they could wade
V-ing form
I could be wading you could be wading she could be wading we could be wading you could be wading they could be wading
Perfect
I could have waded you could have waded she could have waded we could have waded you could have waded they could have waded
V-ing perfect
I could have been wading you could have been wading she could have been wading we could have been wading you could have been wading they could have been wading
Negation
Simple form
I could not wade you could not wade she could not wade we could not wade you could not wade they could not wade
V-ing form
I could not be wading you could not be wading she could not be wading we could not be wading you could not be wading they could not be wading
Perfect
I could not have waded you could not have waded she could not have waded we could not have waded you could not have waded they could not have waded
V-ing perfect
I could not have been wading you could not have been wading she could not have been wading we could not have been wading you could not have been wading they could not have been wading
Interrogative form
Simple form
could I wade? could you wade? could she wade? could we wade? could you wade? could they wade?
V-ing form
could I be wading? could you be wading? could she be wading? could we be wading? could you be wading? could they be wading?
Perfect
could I have waded? could you have waded? could she have waded? could we have waded? could you have waded? could they have waded?
V-ing perfect
could I have been wading? could you have been wading? could she have been wading? could we have been wading? could you have been wading? could they have been wading?
Interro-negative form
Simple form
could I not wade? could you not wade? could she not wade? could we not wade? could you not wade? could they not wade?
V-ing form
could I not be wading? could you not be wading? could she not be wading? could we not be wading? could you not be wading? could they not be wading?
Perfect
could I not have waded? could you not have waded? could she not have waded? could we not have waded? could you not have waded? could they not have waded?
V-ing perfect
could I not have been wading? could you not have been wading? could she not have been wading? could we not have been wading? could you not have been wading? could they not have been wading?