English verb conjugation
COULD CONSTRICT

Regular verb: constrict - constricted - constricted

Affirmation

Simple form	V-ing form
I could constrict you could constrict he could constrict we could constrict you could constrict they could constrict	I could be constricting you could be constricting he could be constricting we could be constricting you could be constricting they could be constricting
Perfect	V-ing perfect
I could have constricted you could have constricted he could have constricted we could have constricted you could have constricted they could have constricted	I could have been constricting you could have been constricting he could have been constricting we could have been constricting you could have been constricting they could have been constricting

Negation

Simple form	V-ing form
I couldn't constrict you couldn't constrict he couldn't constrict we couldn't constrict you couldn't constrict they couldn't constrict	I couldn't be constricting you couldn't be constricting he couldn't be constricting we couldn't be constricting you couldn't be constricting they couldn't be constricting
Perfect	V-ing perfect
I couldn't have constricted you couldn't have constricted he couldn't have constricted we couldn't have constricted you couldn't have constricted they couldn't have constricted	I couldn't have been constricting you couldn't have been constricting he couldn't have been constricting we couldn't have been constricting you couldn't have been constricting they couldn't have been constricting

Interrogative form

Simple form	V-ing form
could I constrict? could you constrict? could he constrict? could we constrict? could you constrict? could they constrict?	could I be constricting? could you be constricting? could he be constricting? could we be constricting? could you be constricting? could they be constricting?
Perfect	V-ing perfect
could I have constricted? could you have constricted? could he have constricted? could we have constricted? could you have constricted? could they have constricted?	could I have been constricting? could you have been constricting? could he have been constricting? could we have been constricting? could you have been constricting? could they have been constricting?

Interro-negative form

Simple form	V-ing form
couldn't I constrict? couldn't you constrict? couldn't he constrict? couldn't we constrict? couldn't you constrict? couldn't they constrict?	couldn't I be constricting? couldn't you be constricting? couldn't he be constricting? couldn't we be constricting? couldn't you be constricting? couldn't they be constricting?
Perfect	V-ing perfect
couldn't I have constricted? couldn't you have constricted? couldn't he have constricted? couldn't we have constricted? couldn't you have constricted? couldn't they have constricted?	couldn't I have been constricting? couldn't you have been constricting? couldn't he have been constricting? couldn't we have been constricting? couldn't you have been constricting? couldn't they have been constricting?