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 mustn't find you mustn't find he mustn't find we mustn't find you mustn't find they mustn't find	I mustn't be finding you mustn't be finding he mustn't be finding we mustn't be finding you mustn't be finding they mustn't be finding
Perfect	V-ing perfect
I mustn't have found you mustn't have found he mustn't have found we mustn't have found you mustn't have found they mustn't have found	I mustn't have been finding you mustn't have been finding he mustn't have been finding we mustn't have been finding you mustn't have been finding they mustn't 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
mustn't I find? mustn't you find? mustn't he find? mustn't we find? mustn't you find? mustn't they find?	mustn't I be finding? mustn't you be finding? mustn't he be finding? mustn't we be finding? mustn't you be finding? mustn't they be finding?
Perfect	V-ing perfect
mustn't I have found? mustn't you have found? mustn't he have found? mustn't we have found? mustn't you have found? mustn't they have found?	mustn't I have been finding? mustn't you have been finding? mustn't he have been finding? mustn't we have been finding? mustn't you have been finding? mustn't they have been finding?