I could trifurcate you could trifurcate she could trifurcate we could trifurcate you could trifurcate they could trifurcate
V-ing form
I could be trifurcating you could be trifurcating she could be trifurcating we could be trifurcating you could be trifurcating they could be trifurcating
Perfect
I could have trifurcated you could have trifurcated she could have trifurcated we could have trifurcated you could have trifurcated they could have trifurcated
V-ing perfect
I could have been trifurcating you could have been trifurcating she could have been trifurcating we could have been trifurcating you could have been trifurcating they could have been trifurcating
Negation
Simple form
I could not trifurcate you could not trifurcate she could not trifurcate we could not trifurcate you could not trifurcate they could not trifurcate
V-ing form
I could not be trifurcating you could not be trifurcating she could not be trifurcating we could not be trifurcating you could not be trifurcating they could not be trifurcating
Perfect
I could not have trifurcated you could not have trifurcated she could not have trifurcated we could not have trifurcated you could not have trifurcated they could not have trifurcated
V-ing perfect
I could not have been trifurcating you could not have been trifurcating she could not have been trifurcating we could not have been trifurcating you could not have been trifurcating they could not have been trifurcating
Interrogative form
Simple form
could I trifurcate? could you trifurcate? could she trifurcate? could we trifurcate? could you trifurcate? could they trifurcate?
V-ing form
could I be trifurcating? could you be trifurcating? could she be trifurcating? could we be trifurcating? could you be trifurcating? could they be trifurcating?
Perfect
could I have trifurcated? could you have trifurcated? could she have trifurcated? could we have trifurcated? could you have trifurcated? could they have trifurcated?
V-ing perfect
could I have been trifurcating? could you have been trifurcating? could she have been trifurcating? could we have been trifurcating? could you have been trifurcating? could they have been trifurcating?
Interro-negative form
Simple form
could I not trifurcate? could you not trifurcate? could she not trifurcate? could we not trifurcate? could you not trifurcate? could they not trifurcate?
V-ing form
could I not be trifurcating? could you not be trifurcating? could she not be trifurcating? could we not be trifurcating? could you not be trifurcating? could they not be trifurcating?
Perfect
could I not have trifurcated? could you not have trifurcated? could she not have trifurcated? could we not have trifurcated? could you not have trifurcated? could they not have trifurcated?
V-ing perfect
could I not have been trifurcating? could you not have been trifurcating? could she not have been trifurcating? could we not have been trifurcating? could you not have been trifurcating? could they not have been trifurcating?