English verb conjugation
MUST STROP

Regular verb: strop - stropped - stropped

Affirmation

Simple form	V-ing form
I must strop you must strop he must strop we must strop you must strop they must strop	I must be stropping you must be stropping he must be stropping we must be stropping you must be stropping they must be stropping
Perfect	V-ing perfect
I must have stropped you must have stropped he must have stropped we must have stropped you must have stropped they must have stropped	I must have been stropping you must have been stropping he must have been stropping we must have been stropping you must have been stropping they must have been stropping

Negation

Simple form	V-ing form
I must not strop you must not strop he must not strop we must not strop you must not strop they must not strop	I must not be stropping you must not be stropping he must not be stropping we must not be stropping you must not be stropping they must not be stropping
Perfect	V-ing perfect
I must not have stropped you must not have stropped he must not have stropped we must not have stropped you must not have stropped they must not have stropped	I must not have been stropping you must not have been stropping he must not have been stropping we must not have been stropping you must not have been stropping they must not have been stropping

Interrogative form

Simple form	V-ing form
must I strop? must you strop? must he strop? must we strop? must you strop? must they strop?	must I be stropping? must you be stropping? must he be stropping? must we be stropping? must you be stropping? must they be stropping?
Perfect	V-ing perfect
must I have stropped? must you have stropped? must he have stropped? must we have stropped? must you have stropped? must they have stropped?	must I have been stropping? must you have been stropping? must he have been stropping? must we have been stropping? must you have been stropping? must they have been stropping?

Interro-negative form

Simple form	V-ing form
must I not strop? must you not strop? must he not strop? must we not strop? must you not strop? must they not strop?	must I not be stropping? must you not be stropping? must he not be stropping? must we not be stropping? must you not be stropping? must they not be stropping?
Perfect	V-ing perfect
must I not have stropped? must you not have stropped? must he not have stropped? must we not have stropped? must you not have stropped? must they not have stropped?	must I not have been stropping? must you not have been stropping? must he not have been stropping? must we not have been stropping? must you not have been stropping? must they not have been stropping?