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

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
I must not wis
you must not wis
he must not wis
we must not wis
you must not wis
they must not wis 	I must not be wising
you must not be wising
he must not be wising
we must not be wising
you must not be wising
they must not be wising	I must not have wissed, wist
you must not have wissed, wist
he must not have wissed, wist
we must not have wissed, wist
you must not have wissed, wist
they must not have wissed, wist	I must not have been wising
you must not have been wising
he must not have been wising
we must not have been wising
you must not have been wising
they must not have been wising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
must I not wis?
must you not wis?
must he not wis?
must we not wis?
must you not wis?
must they not wis? 	must I not be wising?
must you not be wising?
must he not be wising?
must we not be wising?
must you not be wising?
must they not be wising? 	must I not have wissed, wist?
must you not have wissed, wist?
must he not have wissed, wist?
must we not have wissed, wist?
must you not have wissed, wist?
must they not have wissed, wist? 	must I not have been wising?
must you not have been wising?
must he not have been wising?
must we not have been wising?
must you not have been wising?
must they not have been wising?