English verb conjugation
MUST SPEND

Irregular verb: spend - spent - spent

Affirmation

Simple form	V-ing form
I must spend you must spend she must spend we must spend you must spend they must spend	I must be spending you must be spending she must be spending we must be spending you must be spending they must be spending
Perfect	V-ing perfect
I must have spent you must have spent she must have spent we must have spent you must have spent they must have spent	I must have been spending you must have been spending she must have been spending we must have been spending you must have been spending they must have been spending

Negation

Simple form	V-ing form
I mustn't spend you mustn't spend she mustn't spend we mustn't spend you mustn't spend they mustn't spend	I mustn't be spending you mustn't be spending she mustn't be spending we mustn't be spending you mustn't be spending they mustn't be spending
Perfect	V-ing perfect
I mustn't have spent you mustn't have spent she mustn't have spent we mustn't have spent you mustn't have spent they mustn't have spent	I mustn't have been spending you mustn't have been spending she mustn't have been spending we mustn't have been spending you mustn't have been spending they mustn't have been spending

Interrogative form

Simple form	V-ing form
must I spend? must you spend? must she spend? must we spend? must you spend? must they spend?	must I be spending? must you be spending? must she be spending? must we be spending? must you be spending? must they be spending?
Perfect	V-ing perfect
must I have spent? must you have spent? must she have spent? must we have spent? must you have spent? must they have spent?	must I have been spending? must you have been spending? must she have been spending? must we have been spending? must you have been spending? must they have been spending?

Interro-negative form

Simple form	V-ing form
mustn't I spend? mustn't you spend? mustn't she spend? mustn't we spend? mustn't you spend? mustn't they spend?	mustn't I be spending? mustn't you be spending? mustn't she be spending? mustn't we be spending? mustn't you be spending? mustn't they be spending?
Perfect	V-ing perfect
mustn't I have spent? mustn't you have spent? mustn't she have spent? mustn't we have spent? mustn't you have spent? mustn't they have spent?	mustn't I have been spending? mustn't you have been spending? mustn't she have been spending? mustn't we have been spending? mustn't you have been spending? mustn't they have been spending?