English verb conjugation
COULD INCURVE

Regular verb: incurve - incurved - incurved

Affirmation

Simple form	V-ing form
I could incurve you could incurve he could incurve we could incurve you could incurve they could incurve	I could be incurving you could be incurving he could be incurving we could be incurving you could be incurving they could be incurving
Perfect	V-ing perfect
I could have incurved you could have incurved he could have incurved we could have incurved you could have incurved they could have incurved	I could have been incurving you could have been incurving he could have been incurving we could have been incurving you could have been incurving they could have been incurving

Negation

Simple form	V-ing form
I couldn't incurve you couldn't incurve he couldn't incurve we couldn't incurve you couldn't incurve they couldn't incurve	I couldn't be incurving you couldn't be incurving he couldn't be incurving we couldn't be incurving you couldn't be incurving they couldn't be incurving
Perfect	V-ing perfect
I couldn't have incurved you couldn't have incurved he couldn't have incurved we couldn't have incurved you couldn't have incurved they couldn't have incurved	I couldn't have been incurving you couldn't have been incurving he couldn't have been incurving we couldn't have been incurving you couldn't have been incurving they couldn't have been incurving

Interrogative form

Simple form	V-ing form
could I incurve? could you incurve? could he incurve? could we incurve? could you incurve? could they incurve?	could I be incurving? could you be incurving? could he be incurving? could we be incurving? could you be incurving? could they be incurving?
Perfect	V-ing perfect
could I have incurved? could you have incurved? could he have incurved? could we have incurved? could you have incurved? could they have incurved?	could I have been incurving? could you have been incurving? could he have been incurving? could we have been incurving? could you have been incurving? could they have been incurving?

Interro-negative form

Simple form	V-ing form
couldn't I incurve? couldn't you incurve? couldn't he incurve? couldn't we incurve? couldn't you incurve? couldn't they incurve?	couldn't I be incurving? couldn't you be incurving? couldn't he be incurving? couldn't we be incurving? couldn't you be incurving? couldn't they be incurving?
Perfect	V-ing perfect
couldn't I have incurved? couldn't you have incurved? couldn't he have incurved? couldn't we have incurved? couldn't you have incurved? couldn't they have incurved?	couldn't I have been incurving? couldn't you have been incurving? couldn't he have been incurving? couldn't we have been incurving? couldn't you have been incurving? couldn't they have been incurving?