English verb conjugation
MUST RESTRENGTHEN

Regular verb: restrengthen - restrengthened - restrengthened

Affirmation

Simple form	V-ing form
I must restrengthen you must restrengthen he must restrengthen we must restrengthen you must restrengthen they must restrengthen	I must be restrengthening you must be restrengthening he must be restrengthening we must be restrengthening you must be restrengthening they must be restrengthening
Perfect	V-ing perfect
I must have restrengthened you must have restrengthened he must have restrengthened we must have restrengthened you must have restrengthened they must have restrengthened	I must have been restrengthening you must have been restrengthening he must have been restrengthening we must have been restrengthening you must have been restrengthening they must have been restrengthening

Negation

Simple form	V-ing form
I must not restrengthen you must not restrengthen he must not restrengthen we must not restrengthen you must not restrengthen they must not restrengthen	I must not be restrengthening you must not be restrengthening he must not be restrengthening we must not be restrengthening you must not be restrengthening they must not be restrengthening
Perfect	V-ing perfect
I must not have restrengthened you must not have restrengthened he must not have restrengthened we must not have restrengthened you must not have restrengthened they must not have restrengthened	I must not have been restrengthening you must not have been restrengthening he must not have been restrengthening we must not have been restrengthening you must not have been restrengthening they must not have been restrengthening

Interrogative form

Simple form	V-ing form
must I restrengthen? must you restrengthen? must he restrengthen? must we restrengthen? must you restrengthen? must they restrengthen?	must I be restrengthening? must you be restrengthening? must he be restrengthening? must we be restrengthening? must you be restrengthening? must they be restrengthening?
Perfect	V-ing perfect
must I have restrengthened? must you have restrengthened? must he have restrengthened? must we have restrengthened? must you have restrengthened? must they have restrengthened?	must I have been restrengthening? must you have been restrengthening? must he have been restrengthening? must we have been restrengthening? must you have been restrengthening? must they have been restrengthening?

Interro-negative form

Simple form	V-ing form
must I not restrengthen? must you not restrengthen? must he not restrengthen? must we not restrengthen? must you not restrengthen? must they not restrengthen?	must I not be restrengthening? must you not be restrengthening? must he not be restrengthening? must we not be restrengthening? must you not be restrengthening? must they not be restrengthening?
Perfect	V-ing perfect
must I not have restrengthened? must you not have restrengthened? must he not have restrengthened? must we not have restrengthened? must you not have restrengthened? must they not have restrengthened?	must I not have been restrengthening? must you not have been restrengthening? must he not have been restrengthening? must we not have been restrengthening? must you not have been restrengthening? must they not have been restrengthening?