I could metamorphose you could metamorphose he could metamorphose we could metamorphose you could metamorphose they could metamorphose
V-ing form
I could be metamorphosing you could be metamorphosing he could be metamorphosing we could be metamorphosing you could be metamorphosing they could be metamorphosing
Perfect
I could have metamorphosed you could have metamorphosed he could have metamorphosed we could have metamorphosed you could have metamorphosed they could have metamorphosed
V-ing perfect
I could have been metamorphosing you could have been metamorphosing he could have been metamorphosing we could have been metamorphosing you could have been metamorphosing they could have been metamorphosing
Negation
Simple form
I could not metamorphose you could not metamorphose he could not metamorphose we could not metamorphose you could not metamorphose they could not metamorphose
V-ing form
I could not be metamorphosing you could not be metamorphosing he could not be metamorphosing we could not be metamorphosing you could not be metamorphosing they could not be metamorphosing
Perfect
I could not have metamorphosed you could not have metamorphosed he could not have metamorphosed we could not have metamorphosed you could not have metamorphosed they could not have metamorphosed
V-ing perfect
I could not have been metamorphosing you could not have been metamorphosing he could not have been metamorphosing we could not have been metamorphosing you could not have been metamorphosing they could not have been metamorphosing
Interrogative form
Simple form
could I metamorphose? could you metamorphose? could he metamorphose? could we metamorphose? could you metamorphose? could they metamorphose?
V-ing form
could I be metamorphosing? could you be metamorphosing? could he be metamorphosing? could we be metamorphosing? could you be metamorphosing? could they be metamorphosing?
Perfect
could I have metamorphosed? could you have metamorphosed? could he have metamorphosed? could we have metamorphosed? could you have metamorphosed? could they have metamorphosed?
V-ing perfect
could I have been metamorphosing? could you have been metamorphosing? could he have been metamorphosing? could we have been metamorphosing? could you have been metamorphosing? could they have been metamorphosing?
Interro-negative form
Simple form
could I not metamorphose? could you not metamorphose? could he not metamorphose? could we not metamorphose? could you not metamorphose? could they not metamorphose?
V-ing form
could I not be metamorphosing? could you not be metamorphosing? could he not be metamorphosing? could we not be metamorphosing? could you not be metamorphosing? could they not be metamorphosing?
Perfect
could I not have metamorphosed? could you not have metamorphosed? could he not have metamorphosed? could we not have metamorphosed? could you not have metamorphosed? could they not have metamorphosed?
V-ing perfect
could I not have been metamorphosing? could you not have been metamorphosing? could he not have been metamorphosing? could we not have been metamorphosing? could you not have been metamorphosing? could they not have been metamorphosing?