English verb conjugation
MUST BELABOUR

Regular verb: belabour - belaboured - belaboured

Affirmation

Simple form	V-ing form
I must belabour you must belabour he must belabour we must belabour you must belabour they must belabour	I must be belabouring you must be belabouring he must be belabouring we must be belabouring you must be belabouring they must be belabouring
Perfect	V-ing perfect
I must have belaboured you must have belaboured he must have belaboured we must have belaboured you must have belaboured they must have belaboured	I must have been belabouring you must have been belabouring he must have been belabouring we must have been belabouring you must have been belabouring they must have been belabouring

Negation

Simple form	V-ing form
I mustn't belabour you mustn't belabour he mustn't belabour we mustn't belabour you mustn't belabour they mustn't belabour	I mustn't be belabouring you mustn't be belabouring he mustn't be belabouring we mustn't be belabouring you mustn't be belabouring they mustn't be belabouring
Perfect	V-ing perfect
I mustn't have belaboured you mustn't have belaboured he mustn't have belaboured we mustn't have belaboured you mustn't have belaboured they mustn't have belaboured	I mustn't have been belabouring you mustn't have been belabouring he mustn't have been belabouring we mustn't have been belabouring you mustn't have been belabouring they mustn't have been belabouring

Interrogative form

Simple form	V-ing form
must I belabour? must you belabour? must he belabour? must we belabour? must you belabour? must they belabour?	must I be belabouring? must you be belabouring? must he be belabouring? must we be belabouring? must you be belabouring? must they be belabouring?
Perfect	V-ing perfect
must I have belaboured? must you have belaboured? must he have belaboured? must we have belaboured? must you have belaboured? must they have belaboured?	must I have been belabouring? must you have been belabouring? must he have been belabouring? must we have been belabouring? must you have been belabouring? must they have been belabouring?

Interro-negative form

Simple form	V-ing form
mustn't I belabour? mustn't you belabour? mustn't he belabour? mustn't we belabour? mustn't you belabour? mustn't they belabour?	mustn't I be belabouring? mustn't you be belabouring? mustn't he be belabouring? mustn't we be belabouring? mustn't you be belabouring? mustn't they be belabouring?
Perfect	V-ing perfect
mustn't I have belaboured? mustn't you have belaboured? mustn't he have belaboured? mustn't we have belaboured? mustn't you have belaboured? mustn't they have belaboured?	mustn't I have been belabouring? mustn't you have been belabouring? mustn't he have been belabouring? mustn't we have been belabouring? mustn't you have been belabouring? mustn't they have been belabouring?