English verb conjugation
MUST IMPINGE

Regular verb: impinge - impinged - impinged

Affirmation

Simple form	V-ing form
I must impinge you must impinge he must impinge we must impinge you must impinge they must impinge	I must be impinging you must be impinging he must be impinging we must be impinging you must be impinging they must be impinging
Perfect	V-ing perfect
I must have impinged you must have impinged he must have impinged we must have impinged you must have impinged they must have impinged	I must have been impinging you must have been impinging he must have been impinging we must have been impinging you must have been impinging they must have been impinging

Negation

Simple form	V-ing form
I must not impinge you must not impinge he must not impinge we must not impinge you must not impinge they must not impinge	I must not be impinging you must not be impinging he must not be impinging we must not be impinging you must not be impinging they must not be impinging
Perfect	V-ing perfect
I must not have impinged you must not have impinged he must not have impinged we must not have impinged you must not have impinged they must not have impinged	I must not have been impinging you must not have been impinging he must not have been impinging we must not have been impinging you must not have been impinging they must not have been impinging

Interrogative form

Simple form	V-ing form
must I impinge? must you impinge? must he impinge? must we impinge? must you impinge? must they impinge?	must I be impinging? must you be impinging? must he be impinging? must we be impinging? must you be impinging? must they be impinging?
Perfect	V-ing perfect
must I have impinged? must you have impinged? must he have impinged? must we have impinged? must you have impinged? must they have impinged?	must I have been impinging? must you have been impinging? must he have been impinging? must we have been impinging? must you have been impinging? must they have been impinging?

Interro-negative form

Simple form	V-ing form
must I not impinge? must you not impinge? must he not impinge? must we not impinge? must you not impinge? must they not impinge?	must I not be impinging? must you not be impinging? must he not be impinging? must we not be impinging? must you not be impinging? must they not be impinging?
Perfect	V-ing perfect
must I not have impinged? must you not have impinged? must he not have impinged? must we not have impinged? must you not have impinged? must they not have impinged?	must I not have been impinging? must you not have been impinging? must he not have been impinging? must we not have been impinging? must you not have been impinging? must they not have been impinging?