English verb conjugation
MUST TINKER

Regular verb: tinker - tinkered - tinkered

Affirmation

Simple form	V-ing form
I must tinker you must tinker he must tinker we must tinker you must tinker they must tinker	I must be tinkering you must be tinkering he must be tinkering we must be tinkering you must be tinkering they must be tinkering
Perfect	V-ing perfect
I must have tinkered you must have tinkered he must have tinkered we must have tinkered you must have tinkered they must have tinkered	I must have been tinkering you must have been tinkering he must have been tinkering we must have been tinkering you must have been tinkering they must have been tinkering

Negation

Simple form	V-ing form
I must not tinker you must not tinker he must not tinker we must not tinker you must not tinker they must not tinker	I must not be tinkering you must not be tinkering he must not be tinkering we must not be tinkering you must not be tinkering they must not be tinkering
Perfect	V-ing perfect
I must not have tinkered you must not have tinkered he must not have tinkered we must not have tinkered you must not have tinkered they must not have tinkered	I must not have been tinkering you must not have been tinkering he must not have been tinkering we must not have been tinkering you must not have been tinkering they must not have been tinkering

Interrogative form

Simple form	V-ing form
must I tinker? must you tinker? must he tinker? must we tinker? must you tinker? must they tinker?	must I be tinkering? must you be tinkering? must he be tinkering? must we be tinkering? must you be tinkering? must they be tinkering?
Perfect	V-ing perfect
must I have tinkered? must you have tinkered? must he have tinkered? must we have tinkered? must you have tinkered? must they have tinkered?	must I have been tinkering? must you have been tinkering? must he have been tinkering? must we have been tinkering? must you have been tinkering? must they have been tinkering?

Interro-negative form

Simple form	V-ing form
must I not tinker? must you not tinker? must he not tinker? must we not tinker? must you not tinker? must they not tinker?	must I not be tinkering? must you not be tinkering? must he not be tinkering? must we not be tinkering? must you not be tinkering? must they not be tinkering?
Perfect	V-ing perfect
must I not have tinkered? must you not have tinkered? must he not have tinkered? must we not have tinkered? must you not have tinkered? must they not have tinkered?	must I not have been tinkering? must you not have been tinkering? must he not have been tinkering? must we not have been tinkering? must you not have been tinkering? must they not have been tinkering?