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 must not yock you must not yock he must not yock we must not yock you must not yock they must not yock	I must not be yocking you must not be yocking he must not be yocking we must not be yocking you must not be yocking they must not be yocking
Perfect	V-ing perfect
I must not have yocked you must not have yocked he must not have yocked we must not have yocked you must not have yocked they must not have yocked	I must not have been yocking you must not have been yocking he must not have been yocking we must not have been yocking you must not have been yocking they must not 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
must I not yock? must you not yock? must he not yock? must we not yock? must you not yock? must they not yock?	must I not be yocking? must you not be yocking? must he not be yocking? must we not be yocking? must you not be yocking? must they not be yocking?
Perfect	V-ing perfect
must I not have yocked? must you not have yocked? must he not have yocked? must we not have yocked? must you not have yocked? must they not have yocked?	must I not have been yocking? must you not have been yocking? must he not have been yocking? must we not have been yocking? must you not have been yocking? must they not have been yocking?