English verb conjugation
MUST TAMPER

Regular verb: tamper - tampered - tampered

Affirmation

Simple form	V-ing form
I must tamper you must tamper he must tamper we must tamper you must tamper they must tamper	I must be tampering you must be tampering he must be tampering we must be tampering you must be tampering they must be tampering
Perfect	V-ing perfect
I must have tampered you must have tampered he must have tampered we must have tampered you must have tampered they must have tampered	I must have been tampering you must have been tampering he must have been tampering we must have been tampering you must have been tampering they must have been tampering

Negation

Simple form	V-ing form
I mustn't tamper you mustn't tamper he mustn't tamper we mustn't tamper you mustn't tamper they mustn't tamper	I mustn't be tampering you mustn't be tampering he mustn't be tampering we mustn't be tampering you mustn't be tampering they mustn't be tampering
Perfect	V-ing perfect
I mustn't have tampered you mustn't have tampered he mustn't have tampered we mustn't have tampered you mustn't have tampered they mustn't have tampered	I mustn't have been tampering you mustn't have been tampering he mustn't have been tampering we mustn't have been tampering you mustn't have been tampering they mustn't have been tampering

Interrogative form

Simple form	V-ing form
must I tamper? must you tamper? must he tamper? must we tamper? must you tamper? must they tamper?	must I be tampering? must you be tampering? must he be tampering? must we be tampering? must you be tampering? must they be tampering?
Perfect	V-ing perfect
must I have tampered? must you have tampered? must he have tampered? must we have tampered? must you have tampered? must they have tampered?	must I have been tampering? must you have been tampering? must he have been tampering? must we have been tampering? must you have been tampering? must they have been tampering?

Interro-negative form

Simple form	V-ing form
mustn't I tamper? mustn't you tamper? mustn't he tamper? mustn't we tamper? mustn't you tamper? mustn't they tamper?	mustn't I be tampering? mustn't you be tampering? mustn't he be tampering? mustn't we be tampering? mustn't you be tampering? mustn't they be tampering?
Perfect	V-ing perfect
mustn't I have tampered? mustn't you have tampered? mustn't he have tampered? mustn't we have tampered? mustn't you have tampered? mustn't they have tampered?	mustn't I have been tampering? mustn't you have been tampering? mustn't he have been tampering? mustn't we have been tampering? mustn't you have been tampering? mustn't they have been tampering?