could supplant
Regular verb: supplant - supplanted- supplanted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could supplant
you could supplant
he could supplant
we could supplant
you could supplant
they could supplant 	I could be supplanting
you could be supplanting
he could be supplanting
we could be supplanting
you could be supplanting
they could be supplanting	I could have supplanted
you could have supplanted
he could have supplanted
we could have supplanted
you could have supplanted
they could have supplanted	I could have been supplanting
you could have been supplanting
he could have been supplanting
we could have been supplanting
you could have been supplanting
they could have been supplanting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not supplant
you could not supplant
he could not supplant
we could not supplant
you could not supplant
they could not supplant 	I could not be supplanting
you could not be supplanting
he could not be supplanting
we could not be supplanting
you could not be supplanting
they could not be supplanting	I could not have supplanted
you could not have supplanted
he could not have supplanted
we could not have supplanted
you could not have supplanted
they could not have supplanted	I could not have been supplanting
you could not have been supplanting
he could not have been supplanting
we could not have been supplanting
you could not have been supplanting
they could not have been supplanting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I supplant?
could you supplant?
could he supplant?
could we supplant?
could you supplant?
could they supplant? 	could I be supplanting?
could you be supplanting?
could he be supplanting?
could we be supplanting?
could you be supplanting?
could they be supplanting? 	could I have supplanted?
could you have supplanted?
could he have supplanted?
could we have supplanted?
could you have supplanted?
could they have supplanted? 	could I have been supplanting?
could you have been supplanting?
could he have been supplanting?
could we have been supplanting?
could you have been supplanting?
could they have been supplanting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not supplant?
could you not supplant?
could he not supplant?
could we not supplant?
could you not supplant?
could they not supplant? 	could I not be supplanting?
could you not be supplanting?
could he not be supplanting?
could we not be supplanting?
could you not be supplanting?
could they not be supplanting? 	could I not have supplanted?
could you not have supplanted?
could he not have supplanted?
could we not have supplanted?
could you not have supplanted?
could they not have supplanted? 	could I not have been supplanting?
could you not have been supplanting?
could he not have been supplanting?
could we not have been supplanting?
could you not have been supplanting?
could they not have been supplanting?