English verb conjugation
MUST INCURVE

Regular verb: incurve - incurved - incurved

Affirmation

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

Negation

Simple form	V-ing form
I must not incurve you must not incurve she must not incurve we must not incurve you must not incurve they must not incurve	I must not be incurving you must not be incurving she must not be incurving we must not be incurving you must not be incurving they must not be incurving
Perfect	V-ing perfect
I must not have incurved you must not have incurved she must not have incurved we must not have incurved you must not have incurved they must not have incurved	I must not have been incurving you must not have been incurving she must not have been incurving we must not have been incurving you must not have been incurving they must not have been incurving

Interrogative form

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

Interro-negative form

Simple form	V-ing form
must I not incurve? must you not incurve? must she not incurve? must we not incurve? must you not incurve? must they not incurve?	must I not be incurving? must you not be incurving? must she not be incurving? must we not be incurving? must you not be incurving? must they not be incurving?
Perfect	V-ing perfect
must I not have incurved? must you not have incurved? must she not have incurved? must we not have incurved? must you not have incurved? must they not have incurved?	must I not have been incurving? must you not have been incurving? must she not have been incurving? must we not have been incurving? must you not have been incurving? must they not have been incurving?