English verb conjugation
MUST QUASH

Regular verb: quash - quashed - quashed

Affirmation

Simple form	V-ing form
I must quash you must quash he must quash we must quash you must quash they must quash	I must be quashing you must be quashing he must be quashing we must be quashing you must be quashing they must be quashing
Perfect	V-ing perfect
I must have quashed you must have quashed he must have quashed we must have quashed you must have quashed they must have quashed	I must have been quashing you must have been quashing he must have been quashing we must have been quashing you must have been quashing they must have been quashing

Negation

Simple form	V-ing form
I mustn't quash you mustn't quash he mustn't quash we mustn't quash you mustn't quash they mustn't quash	I mustn't be quashing you mustn't be quashing he mustn't be quashing we mustn't be quashing you mustn't be quashing they mustn't be quashing
Perfect	V-ing perfect
I mustn't have quashed you mustn't have quashed he mustn't have quashed we mustn't have quashed you mustn't have quashed they mustn't have quashed	I mustn't have been quashing you mustn't have been quashing he mustn't have been quashing we mustn't have been quashing you mustn't have been quashing they mustn't have been quashing

Interrogative form

Simple form	V-ing form
must I quash? must you quash? must he quash? must we quash? must you quash? must they quash?	must I be quashing? must you be quashing? must he be quashing? must we be quashing? must you be quashing? must they be quashing?
Perfect	V-ing perfect
must I have quashed? must you have quashed? must he have quashed? must we have quashed? must you have quashed? must they have quashed?	must I have been quashing? must you have been quashing? must he have been quashing? must we have been quashing? must you have been quashing? must they have been quashing?

Interro-negative form

Simple form	V-ing form
mustn't I quash? mustn't you quash? mustn't he quash? mustn't we quash? mustn't you quash? mustn't they quash?	mustn't I be quashing? mustn't you be quashing? mustn't he be quashing? mustn't we be quashing? mustn't you be quashing? mustn't they be quashing?
Perfect	V-ing perfect
mustn't I have quashed? mustn't you have quashed? mustn't he have quashed? mustn't we have quashed? mustn't you have quashed? mustn't they have quashed?	mustn't I have been quashing? mustn't you have been quashing? mustn't he have been quashing? mustn't we have been quashing? mustn't you have been quashing? mustn't they have been quashing?