English verb conjugation
MUST GASH

Regular verb: gash - gashed - gashed

Affirmation

Simple form	V-ing form
I must gash you must gash he must gash we must gash you must gash they must gash	I must be gashing you must be gashing he must be gashing we must be gashing you must be gashing they must be gashing
Perfect	V-ing perfect
I must have gashed you must have gashed he must have gashed we must have gashed you must have gashed they must have gashed	I must have been gashing you must have been gashing he must have been gashing we must have been gashing you must have been gashing they must have been gashing

Negation

Simple form	V-ing form
I must not gash you must not gash he must not gash we must not gash you must not gash they must not gash	I must not be gashing you must not be gashing he must not be gashing we must not be gashing you must not be gashing they must not be gashing
Perfect	V-ing perfect
I must not have gashed you must not have gashed he must not have gashed we must not have gashed you must not have gashed they must not have gashed	I must not have been gashing you must not have been gashing he must not have been gashing we must not have been gashing you must not have been gashing they must not have been gashing

Interrogative form

Simple form	V-ing form
must I gash? must you gash? must he gash? must we gash? must you gash? must they gash?	must I be gashing? must you be gashing? must he be gashing? must we be gashing? must you be gashing? must they be gashing?
Perfect	V-ing perfect
must I have gashed? must you have gashed? must he have gashed? must we have gashed? must you have gashed? must they have gashed?	must I have been gashing? must you have been gashing? must he have been gashing? must we have been gashing? must you have been gashing? must they have been gashing?

Interro-negative form

Simple form	V-ing form
must I not gash? must you not gash? must he not gash? must we not gash? must you not gash? must they not gash?	must I not be gashing? must you not be gashing? must he not be gashing? must we not be gashing? must you not be gashing? must they not be gashing?
Perfect	V-ing perfect
must I not have gashed? must you not have gashed? must he not have gashed? must we not have gashed? must you not have gashed? must they not have gashed?	must I not have been gashing? must you not have been gashing? must he not have been gashing? must we not have been gashing? must you not have been gashing? must they not have been gashing?