English verb conjugation
MUST BUG

Regular verb: bug - bugged - bugged

Affirmation

Simple form	V-ing form
I must bug you must bug she must bug we must bug you must bug they must bug	I must be bugging you must be bugging she must be bugging we must be bugging you must be bugging they must be bugging
Perfect	V-ing perfect
I must have bugged you must have bugged she must have bugged we must have bugged you must have bugged they must have bugged	I must have been bugging you must have been bugging she must have been bugging we must have been bugging you must have been bugging they must have been bugging

Negation

Simple form	V-ing form
I mustn't bug you mustn't bug she mustn't bug we mustn't bug you mustn't bug they mustn't bug	I mustn't be bugging you mustn't be bugging she mustn't be bugging we mustn't be bugging you mustn't be bugging they mustn't be bugging
Perfect	V-ing perfect
I mustn't have bugged you mustn't have bugged she mustn't have bugged we mustn't have bugged you mustn't have bugged they mustn't have bugged	I mustn't have been bugging you mustn't have been bugging she mustn't have been bugging we mustn't have been bugging you mustn't have been bugging they mustn't have been bugging

Interrogative form

Simple form	V-ing form
must I bug? must you bug? must she bug? must we bug? must you bug? must they bug?	must I be bugging? must you be bugging? must she be bugging? must we be bugging? must you be bugging? must they be bugging?
Perfect	V-ing perfect
must I have bugged? must you have bugged? must she have bugged? must we have bugged? must you have bugged? must they have bugged?	must I have been bugging? must you have been bugging? must she have been bugging? must we have been bugging? must you have been bugging? must they have been bugging?

Interro-negative form

Simple form	V-ing form
mustn't I bug? mustn't you bug? mustn't she bug? mustn't we bug? mustn't you bug? mustn't they bug?	mustn't I be bugging? mustn't you be bugging? mustn't she be bugging? mustn't we be bugging? mustn't you be bugging? mustn't they be bugging?
Perfect	V-ing perfect
mustn't I have bugged? mustn't you have bugged? mustn't she have bugged? mustn't we have bugged? mustn't you have bugged? mustn't they have bugged?	mustn't I have been bugging? mustn't you have been bugging? mustn't she have been bugging? mustn't we have been bugging? mustn't you have been bugging? mustn't they have been bugging?