could dichotomize
Regular verb: dichotomize - dichotomized- dichotomized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could dichotomize
you could dichotomize
he could dichotomize
we could dichotomize
you could dichotomize
they could dichotomize 	I could be dichotomizing
you could be dichotomizing
he could be dichotomizing
we could be dichotomizing
you could be dichotomizing
they could be dichotomizing	I could have dichotomized
you could have dichotomized
he could have dichotomized
we could have dichotomized
you could have dichotomized
they could have dichotomized	I could have been dichotomizing
you could have been dichotomizing
he could have been dichotomizing
we could have been dichotomizing
you could have been dichotomizing
they could have been dichotomizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't dichotomize
you couldn't dichotomize
he couldn't dichotomize
we couldn't dichotomize
you couldn't dichotomize
they couldn't dichotomize 	I couldn't be dichotomizing
you couldn't be dichotomizing
he couldn't be dichotomizing
we couldn't be dichotomizing
you couldn't be dichotomizing
they couldn't be dichotomizing	I couldn't have dichotomized
you couldn't have dichotomized
he couldn't have dichotomized
we couldn't have dichotomized
you couldn't have dichotomized
they couldn't have dichotomized	I couldn't have been dichotomizing
you couldn't have been dichotomizing
he couldn't have been dichotomizing
we couldn't have been dichotomizing
you couldn't have been dichotomizing
they couldn't have been dichotomizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I dichotomize?
could you dichotomize?
could he dichotomize?
could we dichotomize?
could you dichotomize?
could they dichotomize? 	could I be dichotomizing?
could you be dichotomizing?
could he be dichotomizing?
could we be dichotomizing?
could you be dichotomizing?
could they be dichotomizing? 	could I have dichotomized?
could you have dichotomized?
could he have dichotomized?
could we have dichotomized?
could you have dichotomized?
could they have dichotomized? 	could I have been dichotomizing?
could you have been dichotomizing?
could he have been dichotomizing?
could we have been dichotomizing?
could you have been dichotomizing?
could they have been dichotomizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I dichotomize?
couldn't you dichotomize?
couldn't he dichotomize?
couldn't we dichotomize?
couldn't you dichotomize?
couldn't they dichotomize? 	couldn't I be dichotomizing?
couldn't you be dichotomizing?
couldn't he be dichotomizing?
couldn't we be dichotomizing?
couldn't you be dichotomizing?
couldn't they be dichotomizing? 	couldn't I have dichotomized?
couldn't you have dichotomized?
couldn't he have dichotomized?
couldn't we have dichotomized?
couldn't you have dichotomized?
couldn't they have dichotomized? 	couldn't I have been dichotomizing?
couldn't you have been dichotomizing?
couldn't he have been dichotomizing?
couldn't we have been dichotomizing?
couldn't you have been dichotomizing?
couldn't they have been dichotomizing?