English verb conjugation
MUST CLASH

Regular verb: clash - clashed - clashed

Affirmation

Simple form	V-ing form
I must clash you must clash he must clash we must clash you must clash they must clash	I must be clashing you must be clashing he must be clashing we must be clashing you must be clashing they must be clashing
Perfect	V-ing perfect
I must have clashed you must have clashed he must have clashed we must have clashed you must have clashed they must have clashed	I must have been clashing you must have been clashing he must have been clashing we must have been clashing you must have been clashing they must have been clashing

Negation

Simple form	V-ing form
I must not clash you must not clash he must not clash we must not clash you must not clash they must not clash	I must not be clashing you must not be clashing he must not be clashing we must not be clashing you must not be clashing they must not be clashing
Perfect	V-ing perfect
I must not have clashed you must not have clashed he must not have clashed we must not have clashed you must not have clashed they must not have clashed	I must not have been clashing you must not have been clashing he must not have been clashing we must not have been clashing you must not have been clashing they must not have been clashing

Interrogative form

Simple form	V-ing form
must I clash? must you clash? must he clash? must we clash? must you clash? must they clash?	must I be clashing? must you be clashing? must he be clashing? must we be clashing? must you be clashing? must they be clashing?
Perfect	V-ing perfect
must I have clashed? must you have clashed? must he have clashed? must we have clashed? must you have clashed? must they have clashed?	must I have been clashing? must you have been clashing? must he have been clashing? must we have been clashing? must you have been clashing? must they have been clashing?

Interro-negative form

Simple form	V-ing form
must I not clash? must you not clash? must he not clash? must we not clash? must you not clash? must they not clash?	must I not be clashing? must you not be clashing? must he not be clashing? must we not be clashing? must you not be clashing? must they not be clashing?
Perfect	V-ing perfect
must I not have clashed? must you not have clashed? must he not have clashed? must we not have clashed? must you not have clashed? must they not have clashed?	must I not have been clashing? must you not have been clashing? must he not have been clashing? must we not have been clashing? must you not have been clashing? must they not have been clashing?