English verb conjugation
MUST FIND

Irregular verb: find - found - found

Affirmation

Simple form	V-ing form
I must find you must find he must find we must find you must find they must find	I must be finding you must be finding he must be finding we must be finding you must be finding they must be finding
Perfect	V-ing perfect
I must have found you must have found he must have found we must have found you must have found they must have found	I must have been finding you must have been finding he must have been finding we must have been finding you must have been finding they must have been finding

Negation

Simple form	V-ing form
I must not find you must not find he must not find we must not find you must not find they must not find	I must not be finding you must not be finding he must not be finding we must not be finding you must not be finding they must not be finding
Perfect	V-ing perfect
I must not have found you must not have found he must not have found we must not have found you must not have found they must not have found	I must not have been finding you must not have been finding he must not have been finding we must not have been finding you must not have been finding they must not have been finding

Interrogative form

Simple form	V-ing form
must I find? must you find? must he find? must we find? must you find? must they find?	must I be finding? must you be finding? must he be finding? must we be finding? must you be finding? must they be finding?
Perfect	V-ing perfect
must I have found? must you have found? must he have found? must we have found? must you have found? must they have found?	must I have been finding? must you have been finding? must he have been finding? must we have been finding? must you have been finding? must they have been finding?

Interro-negative form

Simple form	V-ing form
must I not find? must you not find? must he not find? must we not find? must you not find? must they not find?	must I not be finding? must you not be finding? must he not be finding? must we not be finding? must you not be finding? must they not be finding?
Perfect	V-ing perfect
must I not have found? must you not have found? must he not have found? must we not have found? must you not have found? must they not have found?	must I not have been finding? must you not have been finding? must he not have been finding? must we not have been finding? must you not have been finding? must they not have been finding?