English verb conjugation
MUST PIONEER

Regular verb: pioneer - pioneered - pioneered

Affirmation

Simple form	V-ing form
I must pioneer you must pioneer he must pioneer we must pioneer you must pioneer they must pioneer	I must be pioneering you must be pioneering he must be pioneering we must be pioneering you must be pioneering they must be pioneering
Perfect	V-ing perfect
I must have pioneered you must have pioneered he must have pioneered we must have pioneered you must have pioneered they must have pioneered	I must have been pioneering you must have been pioneering he must have been pioneering we must have been pioneering you must have been pioneering they must have been pioneering

Negation

Simple form	V-ing form
I mustn't pioneer you mustn't pioneer he mustn't pioneer we mustn't pioneer you mustn't pioneer they mustn't pioneer	I mustn't be pioneering you mustn't be pioneering he mustn't be pioneering we mustn't be pioneering you mustn't be pioneering they mustn't be pioneering
Perfect	V-ing perfect
I mustn't have pioneered you mustn't have pioneered he mustn't have pioneered we mustn't have pioneered you mustn't have pioneered they mustn't have pioneered	I mustn't have been pioneering you mustn't have been pioneering he mustn't have been pioneering we mustn't have been pioneering you mustn't have been pioneering they mustn't have been pioneering

Interrogative form

Simple form	V-ing form
must I pioneer? must you pioneer? must he pioneer? must we pioneer? must you pioneer? must they pioneer?	must I be pioneering? must you be pioneering? must he be pioneering? must we be pioneering? must you be pioneering? must they be pioneering?
Perfect	V-ing perfect
must I have pioneered? must you have pioneered? must he have pioneered? must we have pioneered? must you have pioneered? must they have pioneered?	must I have been pioneering? must you have been pioneering? must he have been pioneering? must we have been pioneering? must you have been pioneering? must they have been pioneering?

Interro-negative form

Simple form	V-ing form
mustn't I pioneer? mustn't you pioneer? mustn't he pioneer? mustn't we pioneer? mustn't you pioneer? mustn't they pioneer?	mustn't I be pioneering? mustn't you be pioneering? mustn't he be pioneering? mustn't we be pioneering? mustn't you be pioneering? mustn't they be pioneering?
Perfect	V-ing perfect
mustn't I have pioneered? mustn't you have pioneered? mustn't he have pioneered? mustn't we have pioneered? mustn't you have pioneered? mustn't they have pioneered?	mustn't I have been pioneering? mustn't you have been pioneering? mustn't he have been pioneering? mustn't we have been pioneering? mustn't you have been pioneering? mustn't they have been pioneering?