English verb conjugation
MUST SMASH

Regular verb: smash - smashed - smashed

Affirmation

Simple form	V-ing form
I must smash you must smash she must smash we must smash you must smash they must smash	I must be smashing you must be smashing she must be smashing we must be smashing you must be smashing they must be smashing
Perfect	V-ing perfect
I must have smashed you must have smashed she must have smashed we must have smashed you must have smashed they must have smashed	I must have been smashing you must have been smashing she must have been smashing we must have been smashing you must have been smashing they must have been smashing

Negation

Simple form	V-ing form
I mustn't smash you mustn't smash she mustn't smash we mustn't smash you mustn't smash they mustn't smash	I mustn't be smashing you mustn't be smashing she mustn't be smashing we mustn't be smashing you mustn't be smashing they mustn't be smashing
Perfect	V-ing perfect
I mustn't have smashed you mustn't have smashed she mustn't have smashed we mustn't have smashed you mustn't have smashed they mustn't have smashed	I mustn't have been smashing you mustn't have been smashing she mustn't have been smashing we mustn't have been smashing you mustn't have been smashing they mustn't have been smashing

Interrogative form

Simple form	V-ing form
must I smash? must you smash? must she smash? must we smash? must you smash? must they smash?	must I be smashing? must you be smashing? must she be smashing? must we be smashing? must you be smashing? must they be smashing?
Perfect	V-ing perfect
must I have smashed? must you have smashed? must she have smashed? must we have smashed? must you have smashed? must they have smashed?	must I have been smashing? must you have been smashing? must she have been smashing? must we have been smashing? must you have been smashing? must they have been smashing?

Interro-negative form

Simple form	V-ing form
mustn't I smash? mustn't you smash? mustn't she smash? mustn't we smash? mustn't you smash? mustn't they smash?	mustn't I be smashing? mustn't you be smashing? mustn't she be smashing? mustn't we be smashing? mustn't you be smashing? mustn't they be smashing?
Perfect	V-ing perfect
mustn't I have smashed? mustn't you have smashed? mustn't she have smashed? mustn't we have smashed? mustn't you have smashed? mustn't they have smashed?	mustn't I have been smashing? mustn't you have been smashing? mustn't she have been smashing? mustn't we have been smashing? mustn't you have been smashing? mustn't they have been smashing?