could polychrome
Regular verb: polychrome - polychromed- polychromed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could polychrome
you could polychrome
he could polychrome
we could polychrome
you could polychrome
they could polychrome 	I could be polychroming
you could be polychroming
he could be polychroming
we could be polychroming
you could be polychroming
they could be polychroming	I could have polychromed
you could have polychromed
he could have polychromed
we could have polychromed
you could have polychromed
they could have polychromed	I could have been polychroming
you could have been polychroming
he could have been polychroming
we could have been polychroming
you could have been polychroming
they could have been polychroming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't polychrome
you couldn't polychrome
he couldn't polychrome
we couldn't polychrome
you couldn't polychrome
they couldn't polychrome 	I couldn't be polychroming
you couldn't be polychroming
he couldn't be polychroming
we couldn't be polychroming
you couldn't be polychroming
they couldn't be polychroming	I couldn't have polychromed
you couldn't have polychromed
he couldn't have polychromed
we couldn't have polychromed
you couldn't have polychromed
they couldn't have polychromed	I couldn't have been polychroming
you couldn't have been polychroming
he couldn't have been polychroming
we couldn't have been polychroming
you couldn't have been polychroming
they couldn't have been polychroming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I polychrome?
could you polychrome?
could he polychrome?
could we polychrome?
could you polychrome?
could they polychrome? 	could I be polychroming?
could you be polychroming?
could he be polychroming?
could we be polychroming?
could you be polychroming?
could they be polychroming? 	could I have polychromed?
could you have polychromed?
could he have polychromed?
could we have polychromed?
could you have polychromed?
could they have polychromed? 	could I have been polychroming?
could you have been polychroming?
could he have been polychroming?
could we have been polychroming?
could you have been polychroming?
could they have been polychroming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I polychrome?
couldn't you polychrome?
couldn't he polychrome?
couldn't we polychrome?
couldn't you polychrome?
couldn't they polychrome? 	couldn't I be polychroming?
couldn't you be polychroming?
couldn't he be polychroming?
couldn't we be polychroming?
couldn't you be polychroming?
couldn't they be polychroming? 	couldn't I have polychromed?
couldn't you have polychromed?
couldn't he have polychromed?
couldn't we have polychromed?
couldn't you have polychromed?
couldn't they have polychromed? 	couldn't I have been polychroming?
couldn't you have been polychroming?
couldn't he have been polychroming?
couldn't we have been polychroming?
couldn't you have been polychroming?
couldn't they have been polychroming?