English verb conjugation
MUST CHOIR

Regular verb: choir - choired - choired

Affirmation

Simple form	V-ing form
I must choir you must choir he must choir we must choir you must choir they must choir	I must be choiring you must be choiring he must be choiring we must be choiring you must be choiring they must be choiring
Perfect	V-ing perfect
I must have choired you must have choired he must have choired we must have choired you must have choired they must have choired	I must have been choiring you must have been choiring he must have been choiring we must have been choiring you must have been choiring they must have been choiring

Negation

Simple form	V-ing form
I must not choir you must not choir he must not choir we must not choir you must not choir they must not choir	I must not be choiring you must not be choiring he must not be choiring we must not be choiring you must not be choiring they must not be choiring
Perfect	V-ing perfect
I must not have choired you must not have choired he must not have choired we must not have choired you must not have choired they must not have choired	I must not have been choiring you must not have been choiring he must not have been choiring we must not have been choiring you must not have been choiring they must not have been choiring

Interrogative form

Simple form	V-ing form
must I choir? must you choir? must he choir? must we choir? must you choir? must they choir?	must I be choiring? must you be choiring? must he be choiring? must we be choiring? must you be choiring? must they be choiring?
Perfect	V-ing perfect
must I have choired? must you have choired? must he have choired? must we have choired? must you have choired? must they have choired?	must I have been choiring? must you have been choiring? must he have been choiring? must we have been choiring? must you have been choiring? must they have been choiring?

Interro-negative form

Simple form	V-ing form
must I not choir? must you not choir? must he not choir? must we not choir? must you not choir? must they not choir?	must I not be choiring? must you not be choiring? must he not be choiring? must we not be choiring? must you not be choiring? must they not be choiring?
Perfect	V-ing perfect
must I not have choired? must you not have choired? must he not have choired? must we not have choired? must you not have choired? must they not have choired?	must I not have been choiring? must you not have been choiring? must he not have been choiring? must we not have been choiring? must you not have been choiring? must they not have been choiring?