English verb conjugation
MUST SOLVE

Regular verb: solve - solved - solved

Affirmation

Simple form	V-ing form
I must solve you must solve she must solve we must solve you must solve they must solve	I must be solving you must be solving she must be solving we must be solving you must be solving they must be solving
Perfect	V-ing perfect
I must have solved you must have solved she must have solved we must have solved you must have solved they must have solved	I must have been solving you must have been solving she must have been solving we must have been solving you must have been solving they must have been solving

Negation

Simple form	V-ing form
I must not solve you must not solve she must not solve we must not solve you must not solve they must not solve	I must not be solving you must not be solving she must not be solving we must not be solving you must not be solving they must not be solving
Perfect	V-ing perfect
I must not have solved you must not have solved she must not have solved we must not have solved you must not have solved they must not have solved	I must not have been solving you must not have been solving she must not have been solving we must not have been solving you must not have been solving they must not have been solving

Interrogative form

Simple form	V-ing form
must I solve? must you solve? must she solve? must we solve? must you solve? must they solve?	must I be solving? must you be solving? must she be solving? must we be solving? must you be solving? must they be solving?
Perfect	V-ing perfect
must I have solved? must you have solved? must she have solved? must we have solved? must you have solved? must they have solved?	must I have been solving? must you have been solving? must she have been solving? must we have been solving? must you have been solving? must they have been solving?

Interro-negative form

Simple form	V-ing form
must I not solve? must you not solve? must she not solve? must we not solve? must you not solve? must they not solve?	must I not be solving? must you not be solving? must she not be solving? must we not be solving? must you not be solving? must they not be solving?
Perfect	V-ing perfect
must I not have solved? must you not have solved? must she not have solved? must we not have solved? must you not have solved? must they not have solved?	must I not have been solving? must you not have been solving? must she not have been solving? must we not have been solving? must you not have been solving? must they not have been solving?