could constipate
Regular verb: constipate - constipated- constipated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could constipate
you could constipate
she could constipate
we could constipate
you could constipate
they could constipate 	I could be constipating
you could be constipating
she could be constipating
we could be constipating
you could be constipating
they could be constipating	I could have constipated
you could have constipated
she could have constipated
we could have constipated
you could have constipated
they could have constipated	I could have been constipating
you could have been constipating
she could have been constipating
we could have been constipating
you could have been constipating
they could have been constipating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't constipate
you couldn't constipate
she couldn't constipate
we couldn't constipate
you couldn't constipate
they couldn't constipate 	I couldn't be constipating
you couldn't be constipating
she couldn't be constipating
we couldn't be constipating
you couldn't be constipating
they couldn't be constipating	I couldn't have constipated
you couldn't have constipated
she couldn't have constipated
we couldn't have constipated
you couldn't have constipated
they couldn't have constipated	I couldn't have been constipating
you couldn't have been constipating
she couldn't have been constipating
we couldn't have been constipating
you couldn't have been constipating
they couldn't have been constipating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I constipate?
could you constipate?
could she constipate?
could we constipate?
could you constipate?
could they constipate? 	could I be constipating?
could you be constipating?
could she be constipating?
could we be constipating?
could you be constipating?
could they be constipating? 	could I have constipated?
could you have constipated?
could she have constipated?
could we have constipated?
could you have constipated?
could they have constipated? 	could I have been constipating?
could you have been constipating?
could she have been constipating?
could we have been constipating?
could you have been constipating?
could they have been constipating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I constipate?
couldn't you constipate?
couldn't she constipate?
couldn't we constipate?
couldn't you constipate?
couldn't they constipate? 	couldn't I be constipating?
couldn't you be constipating?
couldn't she be constipating?
couldn't we be constipating?
couldn't you be constipating?
couldn't they be constipating? 	couldn't I have constipated?
couldn't you have constipated?
couldn't she have constipated?
couldn't we have constipated?
couldn't you have constipated?
couldn't they have constipated? 	couldn't I have been constipating?
couldn't you have been constipating?
couldn't she have been constipating?
couldn't we have been constipating?
couldn't you have been constipating?
couldn't they have been constipating?