I could spruce you could spruce she could spruce we could spruce you could spruce they could spruce
V-ing form
I could be sprucing you could be sprucing she could be sprucing we could be sprucing you could be sprucing they could be sprucing
Perfect
I could have spruced you could have spruced she could have spruced we could have spruced you could have spruced they could have spruced
V-ing perfect
I could have been sprucing you could have been sprucing she could have been sprucing we could have been sprucing you could have been sprucing they could have been sprucing
Negation
Simple form
I could not spruce you could not spruce she could not spruce we could not spruce you could not spruce they could not spruce
V-ing form
I could not be sprucing you could not be sprucing she could not be sprucing we could not be sprucing you could not be sprucing they could not be sprucing
Perfect
I could not have spruced you could not have spruced she could not have spruced we could not have spruced you could not have spruced they could not have spruced
V-ing perfect
I could not have been sprucing you could not have been sprucing she could not have been sprucing we could not have been sprucing you could not have been sprucing they could not have been sprucing
Interrogative form
Simple form
could I spruce? could you spruce? could she spruce? could we spruce? could you spruce? could they spruce?
V-ing form
could I be sprucing? could you be sprucing? could she be sprucing? could we be sprucing? could you be sprucing? could they be sprucing?
Perfect
could I have spruced? could you have spruced? could she have spruced? could we have spruced? could you have spruced? could they have spruced?
V-ing perfect
could I have been sprucing? could you have been sprucing? could she have been sprucing? could we have been sprucing? could you have been sprucing? could they have been sprucing?
Interro-negative form
Simple form
could I not spruce? could you not spruce? could she not spruce? could we not spruce? could you not spruce? could they not spruce?
V-ing form
could I not be sprucing? could you not be sprucing? could she not be sprucing? could we not be sprucing? could you not be sprucing? could they not be sprucing?
Perfect
could I not have spruced? could you not have spruced? could she not have spruced? could we not have spruced? could you not have spruced? could they not have spruced?
V-ing perfect
could I not have been sprucing? could you not have been sprucing? could she not have been sprucing? could we not have been sprucing? could you not have been sprucing? could they not have been sprucing?