English verb conjugation
MUST SNOWPLOW

Regular verb: snowplow - snowplowed - snowplowed

Affirmation

Simple form	V-ing form
I must snowplow you must snowplow she must snowplow we must snowplow you must snowplow they must snowplow	I must be snowplowing you must be snowplowing she must be snowplowing we must be snowplowing you must be snowplowing they must be snowplowing
Perfect	V-ing perfect
I must have snowplowed you must have snowplowed she must have snowplowed we must have snowplowed you must have snowplowed they must have snowplowed	I must have been snowplowing you must have been snowplowing she must have been snowplowing we must have been snowplowing you must have been snowplowing they must have been snowplowing

Negation

Simple form	V-ing form
I mustn't snowplow you mustn't snowplow she mustn't snowplow we mustn't snowplow you mustn't snowplow they mustn't snowplow	I mustn't be snowplowing you mustn't be snowplowing she mustn't be snowplowing we mustn't be snowplowing you mustn't be snowplowing they mustn't be snowplowing
Perfect	V-ing perfect
I mustn't have snowplowed you mustn't have snowplowed she mustn't have snowplowed we mustn't have snowplowed you mustn't have snowplowed they mustn't have snowplowed	I mustn't have been snowplowing you mustn't have been snowplowing she mustn't have been snowplowing we mustn't have been snowplowing you mustn't have been snowplowing they mustn't have been snowplowing

Interrogative form

Simple form	V-ing form
must I snowplow? must you snowplow? must she snowplow? must we snowplow? must you snowplow? must they snowplow?	must I be snowplowing? must you be snowplowing? must she be snowplowing? must we be snowplowing? must you be snowplowing? must they be snowplowing?
Perfect	V-ing perfect
must I have snowplowed? must you have snowplowed? must she have snowplowed? must we have snowplowed? must you have snowplowed? must they have snowplowed?	must I have been snowplowing? must you have been snowplowing? must she have been snowplowing? must we have been snowplowing? must you have been snowplowing? must they have been snowplowing?

Interro-negative form

Simple form	V-ing form
mustn't I snowplow? mustn't you snowplow? mustn't she snowplow? mustn't we snowplow? mustn't you snowplow? mustn't they snowplow?	mustn't I be snowplowing? mustn't you be snowplowing? mustn't she be snowplowing? mustn't we be snowplowing? mustn't you be snowplowing? mustn't they be snowplowing?
Perfect	V-ing perfect
mustn't I have snowplowed? mustn't you have snowplowed? mustn't she have snowplowed? mustn't we have snowplowed? mustn't you have snowplowed? mustn't they have snowplowed?	mustn't I have been snowplowing? mustn't you have been snowplowing? mustn't she have been snowplowing? mustn't we have been snowplowing? mustn't you have been snowplowing? mustn't they have been snowplowing?