English verb conjugation
MUST YOCK

Regular verb: yock - yocked - yocked

Affirmation

Simple form	V-ing form
I must yock you must yock he must yock we must yock you must yock they must yock	I must be yocking you must be yocking he must be yocking we must be yocking you must be yocking they must be yocking
Perfect	V-ing perfect
I must have yocked you must have yocked he must have yocked we must have yocked you must have yocked they must have yocked	I must have been yocking you must have been yocking he must have been yocking we must have been yocking you must have been yocking they must have been yocking

Negation

Simple form	V-ing form
I mustn't yock you mustn't yock he mustn't yock we mustn't yock you mustn't yock they mustn't yock	I mustn't be yocking you mustn't be yocking he mustn't be yocking we mustn't be yocking you mustn't be yocking they mustn't be yocking
Perfect	V-ing perfect
I mustn't have yocked you mustn't have yocked he mustn't have yocked we mustn't have yocked you mustn't have yocked they mustn't have yocked	I mustn't have been yocking you mustn't have been yocking he mustn't have been yocking we mustn't have been yocking you mustn't have been yocking they mustn't have been yocking

Interrogative form

Simple form	V-ing form
must I yock? must you yock? must he yock? must we yock? must you yock? must they yock?	must I be yocking? must you be yocking? must he be yocking? must we be yocking? must you be yocking? must they be yocking?
Perfect	V-ing perfect
must I have yocked? must you have yocked? must he have yocked? must we have yocked? must you have yocked? must they have yocked?	must I have been yocking? must you have been yocking? must he have been yocking? must we have been yocking? must you have been yocking? must they have been yocking?

Interro-negative form

Simple form	V-ing form
mustn't I yock? mustn't you yock? mustn't he yock? mustn't we yock? mustn't you yock? mustn't they yock?	mustn't I be yocking? mustn't you be yocking? mustn't he be yocking? mustn't we be yocking? mustn't you be yocking? mustn't they be yocking?
Perfect	V-ing perfect
mustn't I have yocked? mustn't you have yocked? mustn't he have yocked? mustn't we have yocked? mustn't you have yocked? mustn't they have yocked?	mustn't I have been yocking? mustn't you have been yocking? mustn't he have been yocking? mustn't we have been yocking? mustn't you have been yocking? mustn't they have been yocking?