English verb conjugation
MUST WIS

Irregular verb: wis - wissed, wist - wissed, wist

Affirmation

Simple form	V-ing form
I must wis you must wis he must wis we must wis you must wis they must wis	I must be wising you must be wising he must be wising we must be wising you must be wising they must be wising
Perfect	V-ing perfect
I must have wissed, wist you must have wissed, wist he must have wissed, wist we must have wissed, wist you must have wissed, wist they must have wissed, wist	I must have been wising you must have been wising he must have been wising we must have been wising you must have been wising they must have been wising

Negation

Simple form	V-ing form
I mustn't wis you mustn't wis he mustn't wis we mustn't wis you mustn't wis they mustn't wis	I mustn't be wising you mustn't be wising he mustn't be wising we mustn't be wising you mustn't be wising they mustn't be wising
Perfect	V-ing perfect
I mustn't have wissed, wist you mustn't have wissed, wist he mustn't have wissed, wist we mustn't have wissed, wist you mustn't have wissed, wist they mustn't have wissed, wist	I mustn't have been wising you mustn't have been wising he mustn't have been wising we mustn't have been wising you mustn't have been wising they mustn't have been wising

Interrogative form

Simple form	V-ing form
must I wis? must you wis? must he wis? must we wis? must you wis? must they wis?	must I be wising? must you be wising? must he be wising? must we be wising? must you be wising? must they be wising?
Perfect	V-ing perfect
must I have wissed, wist? must you have wissed, wist? must he have wissed, wist? must we have wissed, wist? must you have wissed, wist? must they have wissed, wist?	must I have been wising? must you have been wising? must he have been wising? must we have been wising? must you have been wising? must they have been wising?

Interro-negative form

Simple form	V-ing form
mustn't I wis? mustn't you wis? mustn't he wis? mustn't we wis? mustn't you wis? mustn't they wis?	mustn't I be wising? mustn't you be wising? mustn't he be wising? mustn't we be wising? mustn't you be wising? mustn't they be wising?
Perfect	V-ing perfect
mustn't I have wissed, wist? mustn't you have wissed, wist? mustn't he have wissed, wist? mustn't we have wissed, wist? mustn't you have wissed, wist? mustn't they have wissed, wist?	mustn't I have been wising? mustn't you have been wising? mustn't he have been wising? mustn't we have been wising? mustn't you have been wising? mustn't they have been wising?