English verb conjugation
MUST LOB

Regular verb: lob - lobed - lobed

Affirmation

Simple form	V-ing form
I must lob you must lob he must lob we must lob you must lob they must lob	I must be lobing you must be lobing he must be lobing we must be lobing you must be lobing they must be lobing
Perfect	V-ing perfect
I must have lobed you must have lobed he must have lobed we must have lobed you must have lobed they must have lobed	I must have been lobing you must have been lobing he must have been lobing we must have been lobing you must have been lobing they must have been lobing

Negation

Simple form	V-ing form
I mustn't lob you mustn't lob he mustn't lob we mustn't lob you mustn't lob they mustn't lob	I mustn't be lobing you mustn't be lobing he mustn't be lobing we mustn't be lobing you mustn't be lobing they mustn't be lobing
Perfect	V-ing perfect
I mustn't have lobed you mustn't have lobed he mustn't have lobed we mustn't have lobed you mustn't have lobed they mustn't have lobed	I mustn't have been lobing you mustn't have been lobing he mustn't have been lobing we mustn't have been lobing you mustn't have been lobing they mustn't have been lobing

Interrogative form

Simple form	V-ing form
must I lob? must you lob? must he lob? must we lob? must you lob? must they lob?	must I be lobing? must you be lobing? must he be lobing? must we be lobing? must you be lobing? must they be lobing?
Perfect	V-ing perfect
must I have lobed? must you have lobed? must he have lobed? must we have lobed? must you have lobed? must they have lobed?	must I have been lobing? must you have been lobing? must he have been lobing? must we have been lobing? must you have been lobing? must they have been lobing?

Interro-negative form

Simple form	V-ing form
mustn't I lob? mustn't you lob? mustn't he lob? mustn't we lob? mustn't you lob? mustn't they lob?	mustn't I be lobing? mustn't you be lobing? mustn't he be lobing? mustn't we be lobing? mustn't you be lobing? mustn't they be lobing?
Perfect	V-ing perfect
mustn't I have lobed? mustn't you have lobed? mustn't he have lobed? mustn't we have lobed? mustn't you have lobed? mustn't they have lobed?	mustn't I have been lobing? mustn't you have been lobing? mustn't he have been lobing? mustn't we have been lobing? mustn't you have been lobing? mustn't they have been lobing?