English verb conjugation
MUST STRIKE

Irregular verb: strike - struck - struck, stricken

Affirmation

Simple form	V-ing form
I must strike you must strike he must strike we must strike you must strike they must strike	I must be striking you must be striking he must be striking we must be striking you must be striking they must be striking
Perfect	V-ing perfect
I must have struck, stricken you must have struck, stricken he must have struck, stricken we must have struck, stricken you must have struck, stricken they must have struck, stricken	I must have been striking you must have been striking he must have been striking we must have been striking you must have been striking they must have been striking

Negation

Simple form	V-ing form
I mustn't strike you mustn't strike he mustn't strike we mustn't strike you mustn't strike they mustn't strike	I mustn't be striking you mustn't be striking he mustn't be striking we mustn't be striking you mustn't be striking they mustn't be striking
Perfect	V-ing perfect
I mustn't have struck, stricken you mustn't have struck, stricken he mustn't have struck, stricken we mustn't have struck, stricken you mustn't have struck, stricken they mustn't have struck, stricken	I mustn't have been striking you mustn't have been striking he mustn't have been striking we mustn't have been striking you mustn't have been striking they mustn't have been striking

Interrogative form

Simple form	V-ing form
must I strike? must you strike? must he strike? must we strike? must you strike? must they strike?	must I be striking? must you be striking? must he be striking? must we be striking? must you be striking? must they be striking?
Perfect	V-ing perfect
must I have struck, stricken? must you have struck, stricken? must he have struck, stricken? must we have struck, stricken? must you have struck, stricken? must they have struck, stricken?	must I have been striking? must you have been striking? must he have been striking? must we have been striking? must you have been striking? must they have been striking?

Interro-negative form

Simple form	V-ing form
mustn't I strike? mustn't you strike? mustn't he strike? mustn't we strike? mustn't you strike? mustn't they strike?	mustn't I be striking? mustn't you be striking? mustn't he be striking? mustn't we be striking? mustn't you be striking? mustn't they be striking?
Perfect	V-ing perfect
mustn't I have struck, stricken? mustn't you have struck, stricken? mustn't he have struck, stricken? mustn't we have struck, stricken? mustn't you have struck, stricken? mustn't they have struck, stricken?	mustn't I have been striking? mustn't you have been striking? mustn't he have been striking? mustn't we have been striking? mustn't you have been striking? mustn't they have been striking?