I could disvalue you could disvalue she could disvalue we could disvalue you could disvalue they could disvalue
V-ing form
I could be disvaluing you could be disvaluing she could be disvaluing we could be disvaluing you could be disvaluing they could be disvaluing
Perfect
I could have disvalued you could have disvalued she could have disvalued we could have disvalued you could have disvalued they could have disvalued
V-ing perfect
I could have been disvaluing you could have been disvaluing she could have been disvaluing we could have been disvaluing you could have been disvaluing they could have been disvaluing
Negation
Simple form
I could not disvalue you could not disvalue she could not disvalue we could not disvalue you could not disvalue they could not disvalue
V-ing form
I could not be disvaluing you could not be disvaluing she could not be disvaluing we could not be disvaluing you could not be disvaluing they could not be disvaluing
Perfect
I could not have disvalued you could not have disvalued she could not have disvalued we could not have disvalued you could not have disvalued they could not have disvalued
V-ing perfect
I could not have been disvaluing you could not have been disvaluing she could not have been disvaluing we could not have been disvaluing you could not have been disvaluing they could not have been disvaluing
Interrogative form
Simple form
could I disvalue? could you disvalue? could she disvalue? could we disvalue? could you disvalue? could they disvalue?
V-ing form
could I be disvaluing? could you be disvaluing? could she be disvaluing? could we be disvaluing? could you be disvaluing? could they be disvaluing?
Perfect
could I have disvalued? could you have disvalued? could she have disvalued? could we have disvalued? could you have disvalued? could they have disvalued?
V-ing perfect
could I have been disvaluing? could you have been disvaluing? could she have been disvaluing? could we have been disvaluing? could you have been disvaluing? could they have been disvaluing?
Interro-negative form
Simple form
could I not disvalue? could you not disvalue? could she not disvalue? could we not disvalue? could you not disvalue? could they not disvalue?
V-ing form
could I not be disvaluing? could you not be disvaluing? could she not be disvaluing? could we not be disvaluing? could you not be disvaluing? could they not be disvaluing?
Perfect
could I not have disvalued? could you not have disvalued? could she not have disvalued? could we not have disvalued? could you not have disvalued? could they not have disvalued?
V-ing perfect
could I not have been disvaluing? could you not have been disvaluing? could she not have been disvaluing? could we not have been disvaluing? could you not have been disvaluing? could they not have been disvaluing?