English verb conjugation
MUST LYSE

Regular verb: lyse - lysed - lysed

Affirmation

Simple form	V-ing form
I must lyse you must lyse he must lyse we must lyse you must lyse they must lyse	I must be lysing you must be lysing he must be lysing we must be lysing you must be lysing they must be lysing
Perfect	V-ing perfect
I must have lysed you must have lysed he must have lysed we must have lysed you must have lysed they must have lysed	I must have been lysing you must have been lysing he must have been lysing we must have been lysing you must have been lysing they must have been lysing

Negation

Simple form	V-ing form
I mustn't lyse you mustn't lyse he mustn't lyse we mustn't lyse you mustn't lyse they mustn't lyse	I mustn't be lysing you mustn't be lysing he mustn't be lysing we mustn't be lysing you mustn't be lysing they mustn't be lysing
Perfect	V-ing perfect
I mustn't have lysed you mustn't have lysed he mustn't have lysed we mustn't have lysed you mustn't have lysed they mustn't have lysed	I mustn't have been lysing you mustn't have been lysing he mustn't have been lysing we mustn't have been lysing you mustn't have been lysing they mustn't have been lysing

Interrogative form

Simple form	V-ing form
must I lyse? must you lyse? must he lyse? must we lyse? must you lyse? must they lyse?	must I be lysing? must you be lysing? must he be lysing? must we be lysing? must you be lysing? must they be lysing?
Perfect	V-ing perfect
must I have lysed? must you have lysed? must he have lysed? must we have lysed? must you have lysed? must they have lysed?	must I have been lysing? must you have been lysing? must he have been lysing? must we have been lysing? must you have been lysing? must they have been lysing?

Interro-negative form

Simple form	V-ing form
mustn't I lyse? mustn't you lyse? mustn't he lyse? mustn't we lyse? mustn't you lyse? mustn't they lyse?	mustn't I be lysing? mustn't you be lysing? mustn't he be lysing? mustn't we be lysing? mustn't you be lysing? mustn't they be lysing?
Perfect	V-ing perfect
mustn't I have lysed? mustn't you have lysed? mustn't he have lysed? mustn't we have lysed? mustn't you have lysed? mustn't they have lysed?	mustn't I have been lysing? mustn't you have been lysing? mustn't he have been lysing? mustn't we have been lysing? mustn't you have been lysing? mustn't they have been lysing?