English verb conjugation
MUST SLUB

Regular verb: slub - slubed - slubed

Affirmation

Simple form	V-ing form
I must slub you must slub she must slub we must slub you must slub they must slub	I must be slubing you must be slubing she must be slubing we must be slubing you must be slubing they must be slubing
Perfect	V-ing perfect
I must have slubed you must have slubed she must have slubed we must have slubed you must have slubed they must have slubed	I must have been slubing you must have been slubing she must have been slubing we must have been slubing you must have been slubing they must have been slubing

Negation

Simple form	V-ing form
I mustn't slub you mustn't slub she mustn't slub we mustn't slub you mustn't slub they mustn't slub	I mustn't be slubing you mustn't be slubing she mustn't be slubing we mustn't be slubing you mustn't be slubing they mustn't be slubing
Perfect	V-ing perfect
I mustn't have slubed you mustn't have slubed she mustn't have slubed we mustn't have slubed you mustn't have slubed they mustn't have slubed	I mustn't have been slubing you mustn't have been slubing she mustn't have been slubing we mustn't have been slubing you mustn't have been slubing they mustn't have been slubing

Interrogative form

Simple form	V-ing form
must I slub? must you slub? must she slub? must we slub? must you slub? must they slub?	must I be slubing? must you be slubing? must she be slubing? must we be slubing? must you be slubing? must they be slubing?
Perfect	V-ing perfect
must I have slubed? must you have slubed? must she have slubed? must we have slubed? must you have slubed? must they have slubed?	must I have been slubing? must you have been slubing? must she have been slubing? must we have been slubing? must you have been slubing? must they have been slubing?

Interro-negative form

Simple form	V-ing form
mustn't I slub? mustn't you slub? mustn't she slub? mustn't we slub? mustn't you slub? mustn't they slub?	mustn't I be slubing? mustn't you be slubing? mustn't she be slubing? mustn't we be slubing? mustn't you be slubing? mustn't they be slubing?
Perfect	V-ing perfect
mustn't I have slubed? mustn't you have slubed? mustn't she have slubed? mustn't we have slubed? mustn't you have slubed? mustn't they have slubed?	mustn't I have been slubing? mustn't you have been slubing? mustn't she have been slubing? mustn't we have been slubing? mustn't you have been slubing? mustn't they have been slubing?