I could waive you could waive he could waive we could waive you could waive they could waive
V-ing form
I could be waiving you could be waiving he could be waiving we could be waiving you could be waiving they could be waiving
Perfect
I could have waived you could have waived he could have waived we could have waived you could have waived they could have waived
V-ing perfect
I could have been waiving you could have been waiving he could have been waiving we could have been waiving you could have been waiving they could have been waiving
Negation
Simple form
I could not waive you could not waive he could not waive we could not waive you could not waive they could not waive
V-ing form
I could not be waiving you could not be waiving he could not be waiving we could not be waiving you could not be waiving they could not be waiving
Perfect
I could not have waived you could not have waived he could not have waived we could not have waived you could not have waived they could not have waived
V-ing perfect
I could not have been waiving you could not have been waiving he could not have been waiving we could not have been waiving you could not have been waiving they could not have been waiving
Interrogative form
Simple form
could I waive? could you waive? could he waive? could we waive? could you waive? could they waive?
V-ing form
could I be waiving? could you be waiving? could he be waiving? could we be waiving? could you be waiving? could they be waiving?
Perfect
could I have waived? could you have waived? could he have waived? could we have waived? could you have waived? could they have waived?
V-ing perfect
could I have been waiving? could you have been waiving? could he have been waiving? could we have been waiving? could you have been waiving? could they have been waiving?
Interro-negative form
Simple form
could I not waive? could you not waive? could he not waive? could we not waive? could you not waive? could they not waive?
V-ing form
could I not be waiving? could you not be waiving? could he not be waiving? could we not be waiving? could you not be waiving? could they not be waiving?
Perfect
could I not have waived? could you not have waived? could he not have waived? could we not have waived? could you not have waived? could they not have waived?
V-ing perfect
could I not have been waiving? could you not have been waiving? could he not have been waiving? could we not have been waiving? could you not have been waiving? could they not have been waiving?