English verb conjugation
MUST LIFT

Regular verb: lift - lifted - lifted

Affirmation

Simple form	V-ing form
I must lift you must lift she must lift we must lift you must lift they must lift	I must be lifting you must be lifting she must be lifting we must be lifting you must be lifting they must be lifting
Perfect	V-ing perfect
I must have lifted you must have lifted she must have lifted we must have lifted you must have lifted they must have lifted	I must have been lifting you must have been lifting she must have been lifting we must have been lifting you must have been lifting they must have been lifting

Negation

Simple form	V-ing form
I mustn't lift you mustn't lift she mustn't lift we mustn't lift you mustn't lift they mustn't lift	I mustn't be lifting you mustn't be lifting she mustn't be lifting we mustn't be lifting you mustn't be lifting they mustn't be lifting
Perfect	V-ing perfect
I mustn't have lifted you mustn't have lifted she mustn't have lifted we mustn't have lifted you mustn't have lifted they mustn't have lifted	I mustn't have been lifting you mustn't have been lifting she mustn't have been lifting we mustn't have been lifting you mustn't have been lifting they mustn't have been lifting

Interrogative form

Simple form	V-ing form
must I lift? must you lift? must she lift? must we lift? must you lift? must they lift?	must I be lifting? must you be lifting? must she be lifting? must we be lifting? must you be lifting? must they be lifting?
Perfect	V-ing perfect
must I have lifted? must you have lifted? must she have lifted? must we have lifted? must you have lifted? must they have lifted?	must I have been lifting? must you have been lifting? must she have been lifting? must we have been lifting? must you have been lifting? must they have been lifting?

Interro-negative form

Simple form	V-ing form
mustn't I lift? mustn't you lift? mustn't she lift? mustn't we lift? mustn't you lift? mustn't they lift?	mustn't I be lifting? mustn't you be lifting? mustn't she be lifting? mustn't we be lifting? mustn't you be lifting? mustn't they be lifting?
Perfect	V-ing perfect
mustn't I have lifted? mustn't you have lifted? mustn't she have lifted? mustn't we have lifted? mustn't you have lifted? mustn't they have lifted?	mustn't I have been lifting? mustn't you have been lifting? mustn't she have been lifting? mustn't we have been lifting? mustn't you have been lifting? mustn't they have been lifting?