English verb conjugation
MUST SASH

Regular verb: sash - sashed - sashed

Affirmation

Simple form	V-ing form
I must sash you must sash he must sash we must sash you must sash they must sash	I must be sashing you must be sashing he must be sashing we must be sashing you must be sashing they must be sashing
Perfect	V-ing perfect
I must have sashed you must have sashed he must have sashed we must have sashed you must have sashed they must have sashed	I must have been sashing you must have been sashing he must have been sashing we must have been sashing you must have been sashing they must have been sashing

Negation

Simple form	V-ing form
I must not sash you must not sash he must not sash we must not sash you must not sash they must not sash	I must not be sashing you must not be sashing he must not be sashing we must not be sashing you must not be sashing they must not be sashing
Perfect	V-ing perfect
I must not have sashed you must not have sashed he must not have sashed we must not have sashed you must not have sashed they must not have sashed	I must not have been sashing you must not have been sashing he must not have been sashing we must not have been sashing you must not have been sashing they must not have been sashing

Interrogative form

Simple form	V-ing form
must I sash? must you sash? must he sash? must we sash? must you sash? must they sash?	must I be sashing? must you be sashing? must he be sashing? must we be sashing? must you be sashing? must they be sashing?
Perfect	V-ing perfect
must I have sashed? must you have sashed? must he have sashed? must we have sashed? must you have sashed? must they have sashed?	must I have been sashing? must you have been sashing? must he have been sashing? must we have been sashing? must you have been sashing? must they have been sashing?

Interro-negative form

Simple form	V-ing form
must I not sash? must you not sash? must he not sash? must we not sash? must you not sash? must they not sash?	must I not be sashing? must you not be sashing? must he not be sashing? must we not be sashing? must you not be sashing? must they not be sashing?
Perfect	V-ing perfect
must I not have sashed? must you not have sashed? must he not have sashed? must we not have sashed? must you not have sashed? must they not have sashed?	must I not have been sashing? must you not have been sashing? must he not have been sashing? must we not have been sashing? must you not have been sashing? must they not have been sashing?