English verb conjugation
MUST SLUB

Regular verb: slub - slubed - slubed

Affirmation

Simple form	V-ing form
I must slub you must slub he must slub we must slub you must slub they must slub	I must be slubing you must be slubing he 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 he 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 he 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 must not slub you must not slub he must not slub we must not slub you must not slub they must not slub	I must not be slubing you must not be slubing he must not be slubing we must not be slubing you must not be slubing they must not be slubing
Perfect	V-ing perfect
I must not have slubed you must not have slubed he must not have slubed we must not have slubed you must not have slubed they must not have slubed	I must not have been slubing you must not have been slubing he must not have been slubing we must not have been slubing you must not have been slubing they must not have been slubing

Interrogative form

Simple form	V-ing form
must I slub? must you slub? must he slub? must we slub? must you slub? must they slub?	must I be slubing? must you be slubing? must he 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 he 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 he 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
must I not slub? must you not slub? must he not slub? must we not slub? must you not slub? must they not slub?	must I not be slubing? must you not be slubing? must he not be slubing? must we not be slubing? must you not be slubing? must they not be slubing?
Perfect	V-ing perfect
must I not have slubed? must you not have slubed? must he not have slubed? must we not have slubed? must you not have slubed? must they not have slubed?	must I not have been slubing? must you not have been slubing? must he not have been slubing? must we not have been slubing? must you not have been slubing? must they not have been slubing?