I could ornament you could ornament he could ornament we could ornament you could ornament they could ornament
V-ing form
I could be ornamenting you could be ornamenting he could be ornamenting we could be ornamenting you could be ornamenting they could be ornamenting
Perfect
I could have ornamented you could have ornamented he could have ornamented we could have ornamented you could have ornamented they could have ornamented
V-ing perfect
I could have been ornamenting you could have been ornamenting he could have been ornamenting we could have been ornamenting you could have been ornamenting they could have been ornamenting
Negation
Simple form
I could not ornament you could not ornament he could not ornament we could not ornament you could not ornament they could not ornament
V-ing form
I could not be ornamenting you could not be ornamenting he could not be ornamenting we could not be ornamenting you could not be ornamenting they could not be ornamenting
Perfect
I could not have ornamented you could not have ornamented he could not have ornamented we could not have ornamented you could not have ornamented they could not have ornamented
V-ing perfect
I could not have been ornamenting you could not have been ornamenting he could not have been ornamenting we could not have been ornamenting you could not have been ornamenting they could not have been ornamenting
Interrogative form
Simple form
could I ornament? could you ornament? could he ornament? could we ornament? could you ornament? could they ornament?
V-ing form
could I be ornamenting? could you be ornamenting? could he be ornamenting? could we be ornamenting? could you be ornamenting? could they be ornamenting?
Perfect
could I have ornamented? could you have ornamented? could he have ornamented? could we have ornamented? could you have ornamented? could they have ornamented?
V-ing perfect
could I have been ornamenting? could you have been ornamenting? could he have been ornamenting? could we have been ornamenting? could you have been ornamenting? could they have been ornamenting?
Interro-negative form
Simple form
could I not ornament? could you not ornament? could he not ornament? could we not ornament? could you not ornament? could they not ornament?
V-ing form
could I not be ornamenting? could you not be ornamenting? could he not be ornamenting? could we not be ornamenting? could you not be ornamenting? could they not be ornamenting?
Perfect
could I not have ornamented? could you not have ornamented? could he not have ornamented? could we not have ornamented? could you not have ornamented? could they not have ornamented?
V-ing perfect
could I not have been ornamenting? could you not have been ornamenting? could he not have been ornamenting? could we not have been ornamenting? could you not have been ornamenting? could they not have been ornamenting?