English verb conjugation
MUST INCURVE

Regular verb: incurve - incurved - incurved

Affirmation

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

Interrogative form

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