English verb conjugation
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Regular verb: trick - tricked - tricked

Affirmation

Simple form	V-ing form
I must trick you must trick he must trick we must trick you must trick they must trick	I must be tricking you must be tricking he must be tricking we must be tricking you must be tricking they must be tricking
Perfect	V-ing perfect
I must have tricked you must have tricked he must have tricked we must have tricked you must have tricked they must have tricked	I must have been tricking you must have been tricking he must have been tricking we must have been tricking you must have been tricking they must have been tricking

Negation

Simple form	V-ing form
I must not trick you must not trick he must not trick we must not trick you must not trick they must not trick	I must not be tricking you must not be tricking he must not be tricking we must not be tricking you must not be tricking they must not be tricking
Perfect	V-ing perfect
I must not have tricked you must not have tricked he must not have tricked we must not have tricked you must not have tricked they must not have tricked	I must not have been tricking you must not have been tricking he must not have been tricking we must not have been tricking you must not have been tricking they must not have been tricking

Interrogative form

Simple form	V-ing form
must I trick? must you trick? must he trick? must we trick? must you trick? must they trick?	must I be tricking? must you be tricking? must he be tricking? must we be tricking? must you be tricking? must they be tricking?
Perfect	V-ing perfect
must I have tricked? must you have tricked? must he have tricked? must we have tricked? must you have tricked? must they have tricked?	must I have been tricking? must you have been tricking? must he have been tricking? must we have been tricking? must you have been tricking? must they have been tricking?

Interro-negative form

Simple form	V-ing form
must I not trick? must you not trick? must he not trick? must we not trick? must you not trick? must they not trick?	must I not be tricking? must you not be tricking? must he not be tricking? must we not be tricking? must you not be tricking? must they not be tricking?
Perfect	V-ing perfect
must I not have tricked? must you not have tricked? must he not have tricked? must we not have tricked? must you not have tricked? must they not have tricked?	must I not have been tricking? must you not have been tricking? must he not have been tricking? must we not have been tricking? must you not have been tricking? must they not have been tricking?