English verb conjugation
MUST UPHEAVE

Regular verb: upheave - upheaved - upheaved

Affirmation

Simple form	V-ing form
I must upheave you must upheave she must upheave we must upheave you must upheave they must upheave	I must be upheaving you must be upheaving she must be upheaving we must be upheaving you must be upheaving they must be upheaving
Perfect	V-ing perfect
I must have upheaved you must have upheaved she must have upheaved we must have upheaved you must have upheaved they must have upheaved	I must have been upheaving you must have been upheaving she must have been upheaving we must have been upheaving you must have been upheaving they must have been upheaving

Negation

Simple form	V-ing form
I mustn't upheave you mustn't upheave she mustn't upheave we mustn't upheave you mustn't upheave they mustn't upheave	I mustn't be upheaving you mustn't be upheaving she mustn't be upheaving we mustn't be upheaving you mustn't be upheaving they mustn't be upheaving
Perfect	V-ing perfect
I mustn't have upheaved you mustn't have upheaved she mustn't have upheaved we mustn't have upheaved you mustn't have upheaved they mustn't have upheaved	I mustn't have been upheaving you mustn't have been upheaving she mustn't have been upheaving we mustn't have been upheaving you mustn't have been upheaving they mustn't have been upheaving

Interrogative form

Simple form	V-ing form
must I upheave? must you upheave? must she upheave? must we upheave? must you upheave? must they upheave?	must I be upheaving? must you be upheaving? must she be upheaving? must we be upheaving? must you be upheaving? must they be upheaving?
Perfect	V-ing perfect
must I have upheaved? must you have upheaved? must she have upheaved? must we have upheaved? must you have upheaved? must they have upheaved?	must I have been upheaving? must you have been upheaving? must she have been upheaving? must we have been upheaving? must you have been upheaving? must they have been upheaving?

Interro-negative form

Simple form	V-ing form
mustn't I upheave? mustn't you upheave? mustn't she upheave? mustn't we upheave? mustn't you upheave? mustn't they upheave?	mustn't I be upheaving? mustn't you be upheaving? mustn't she be upheaving? mustn't we be upheaving? mustn't you be upheaving? mustn't they be upheaving?
Perfect	V-ing perfect
mustn't I have upheaved? mustn't you have upheaved? mustn't she have upheaved? mustn't we have upheaved? mustn't you have upheaved? mustn't they have upheaved?	mustn't I have been upheaving? mustn't you have been upheaving? mustn't she have been upheaving? mustn't we have been upheaving? mustn't you have been upheaving? mustn't they have been upheaving?