English verb conjugation
MUST STRAITJACKET

Regular verb: straitjacket - straitjacketed - straitjacketed

Affirmation

Simple form	V-ing form
I must straitjacket you must straitjacket she must straitjacket we must straitjacket you must straitjacket they must straitjacket	I must be straitjacketing you must be straitjacketing she must be straitjacketing we must be straitjacketing you must be straitjacketing they must be straitjacketing
Perfect	V-ing perfect
I must have straitjacketed you must have straitjacketed she must have straitjacketed we must have straitjacketed you must have straitjacketed they must have straitjacketed	I must have been straitjacketing you must have been straitjacketing she must have been straitjacketing we must have been straitjacketing you must have been straitjacketing they must have been straitjacketing

Negation

Simple form	V-ing form
I must not straitjacket you must not straitjacket she must not straitjacket we must not straitjacket you must not straitjacket they must not straitjacket	I must not be straitjacketing you must not be straitjacketing she must not be straitjacketing we must not be straitjacketing you must not be straitjacketing they must not be straitjacketing
Perfect	V-ing perfect
I must not have straitjacketed you must not have straitjacketed she must not have straitjacketed we must not have straitjacketed you must not have straitjacketed they must not have straitjacketed	I must not have been straitjacketing you must not have been straitjacketing she must not have been straitjacketing we must not have been straitjacketing you must not have been straitjacketing they must not have been straitjacketing

Interrogative form

Simple form	V-ing form
must I straitjacket? must you straitjacket? must she straitjacket? must we straitjacket? must you straitjacket? must they straitjacket?	must I be straitjacketing? must you be straitjacketing? must she be straitjacketing? must we be straitjacketing? must you be straitjacketing? must they be straitjacketing?
Perfect	V-ing perfect
must I have straitjacketed? must you have straitjacketed? must she have straitjacketed? must we have straitjacketed? must you have straitjacketed? must they have straitjacketed?	must I have been straitjacketing? must you have been straitjacketing? must she have been straitjacketing? must we have been straitjacketing? must you have been straitjacketing? must they have been straitjacketing?

Interro-negative form

Simple form	V-ing form
must I not straitjacket? must you not straitjacket? must she not straitjacket? must we not straitjacket? must you not straitjacket? must they not straitjacket?	must I not be straitjacketing? must you not be straitjacketing? must she not be straitjacketing? must we not be straitjacketing? must you not be straitjacketing? must they not be straitjacketing?
Perfect	V-ing perfect
must I not have straitjacketed? must you not have straitjacketed? must she not have straitjacketed? must we not have straitjacketed? must you not have straitjacketed? must they not have straitjacketed?	must I not have been straitjacketing? must you not have been straitjacketing? must she not have been straitjacketing? must we not have been straitjacketing? must you not have been straitjacketing? must they not have been straitjacketing?