English verb conjugation
MUST SANDBAG

Regular verb: sandbag - sandbagged - sandbagged

Affirmation

Simple form	V-ing form
I must sandbag you must sandbag she must sandbag we must sandbag you must sandbag they must sandbag	I must be sandbagging you must be sandbagging she must be sandbagging we must be sandbagging you must be sandbagging they must be sandbagging
Perfect	V-ing perfect
I must have sandbagged you must have sandbagged she must have sandbagged we must have sandbagged you must have sandbagged they must have sandbagged	I must have been sandbagging you must have been sandbagging she must have been sandbagging we must have been sandbagging you must have been sandbagging they must have been sandbagging

Negation

Simple form	V-ing form
I must not sandbag you must not sandbag she must not sandbag we must not sandbag you must not sandbag they must not sandbag	I must not be sandbagging you must not be sandbagging she must not be sandbagging we must not be sandbagging you must not be sandbagging they must not be sandbagging
Perfect	V-ing perfect
I must not have sandbagged you must not have sandbagged she must not have sandbagged we must not have sandbagged you must not have sandbagged they must not have sandbagged	I must not have been sandbagging you must not have been sandbagging she must not have been sandbagging we must not have been sandbagging you must not have been sandbagging they must not have been sandbagging

Interrogative form

Simple form	V-ing form
must I sandbag? must you sandbag? must she sandbag? must we sandbag? must you sandbag? must they sandbag?	must I be sandbagging? must you be sandbagging? must she be sandbagging? must we be sandbagging? must you be sandbagging? must they be sandbagging?
Perfect	V-ing perfect
must I have sandbagged? must you have sandbagged? must she have sandbagged? must we have sandbagged? must you have sandbagged? must they have sandbagged?	must I have been sandbagging? must you have been sandbagging? must she have been sandbagging? must we have been sandbagging? must you have been sandbagging? must they have been sandbagging?

Interro-negative form

Simple form	V-ing form
must I not sandbag? must you not sandbag? must she not sandbag? must we not sandbag? must you not sandbag? must they not sandbag?	must I not be sandbagging? must you not be sandbagging? must she not be sandbagging? must we not be sandbagging? must you not be sandbagging? must they not be sandbagging?
Perfect	V-ing perfect
must I not have sandbagged? must you not have sandbagged? must she not have sandbagged? must we not have sandbagged? must you not have sandbagged? must they not have sandbagged?	must I not have been sandbagging? must you not have been sandbagging? must she not have been sandbagging? must we not have been sandbagging? must you not have been sandbagging? must they not have been sandbagging?