could transform
Regular verb: transform - transformed- transformed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could transform
you could transform
he could transform
we could transform
you could transform
they could transform 	I could be transforming
you could be transforming
he could be transforming
we could be transforming
you could be transforming
they could be transforming	I could have transformed
you could have transformed
he could have transformed
we could have transformed
you could have transformed
they could have transformed	I could have been transforming
you could have been transforming
he could have been transforming
we could have been transforming
you could have been transforming
they could have been transforming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't transform
you couldn't transform
he couldn't transform
we couldn't transform
you couldn't transform
they couldn't transform 	I couldn't be transforming
you couldn't be transforming
he couldn't be transforming
we couldn't be transforming
you couldn't be transforming
they couldn't be transforming	I couldn't have transformed
you couldn't have transformed
he couldn't have transformed
we couldn't have transformed
you couldn't have transformed
they couldn't have transformed	I couldn't have been transforming
you couldn't have been transforming
he couldn't have been transforming
we couldn't have been transforming
you couldn't have been transforming
they couldn't have been transforming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I transform?
could you transform?
could he transform?
could we transform?
could you transform?
could they transform? 	could I be transforming?
could you be transforming?
could he be transforming?
could we be transforming?
could you be transforming?
could they be transforming? 	could I have transformed?
could you have transformed?
could he have transformed?
could we have transformed?
could you have transformed?
could they have transformed? 	could I have been transforming?
could you have been transforming?
could he have been transforming?
could we have been transforming?
could you have been transforming?
could they have been transforming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I transform?
couldn't you transform?
couldn't he transform?
couldn't we transform?
couldn't you transform?
couldn't they transform? 	couldn't I be transforming?
couldn't you be transforming?
couldn't he be transforming?
couldn't we be transforming?
couldn't you be transforming?
couldn't they be transforming? 	couldn't I have transformed?
couldn't you have transformed?
couldn't he have transformed?
couldn't we have transformed?
couldn't you have transformed?
couldn't they have transformed? 	couldn't I have been transforming?
couldn't you have been transforming?
couldn't he have been transforming?
couldn't we have been transforming?
couldn't you have been transforming?
couldn't they have been transforming?