Regular verb: fast fast - fast fasted - fast fasted
Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must fast fast you must fast fast he must fast fast we must fast fast you must fast fast they must fast fast
V-ing form
I must be fast fasting you must be fast fasting he must be fast fasting we must be fast fasting you must be fast fasting they must be fast fasting
Perfect
I must have fast fasted you must have fast fasted he must have fast fasted we must have fast fasted you must have fast fasted they must have fast fasted
V-ing perfect
I must have been fast fasting you must have been fast fasting he must have been fast fasting we must have been fast fasting you must have been fast fasting they must have been fast fasting
Negation
Simple form
I must not fast fast you must not fast fast he must not fast fast we must not fast fast you must not fast fast they must not fast fast
V-ing form
I must not be fast fasting you must not be fast fasting he must not be fast fasting we must not be fast fasting you must not be fast fasting they must not be fast fasting
Perfect
I must not have fast fasted you must not have fast fasted he must not have fast fasted we must not have fast fasted you must not have fast fasted they must not have fast fasted
V-ing perfect
I must not have been fast fasting you must not have been fast fasting he must not have been fast fasting we must not have been fast fasting you must not have been fast fasting they must not have been fast fasting
Interrogative form
Simple form
must I fast fast? must you fast fast? must he fast fast? must we fast fast? must you fast fast? must they fast fast?
V-ing form
must I be fast fasting? must you be fast fasting? must he be fast fasting? must we be fast fasting? must you be fast fasting? must they be fast fasting?
Perfect
must I have fast fasted? must you have fast fasted? must he have fast fasted? must we have fast fasted? must you have fast fasted? must they have fast fasted?
V-ing perfect
must I have been fast fasting? must you have been fast fasting? must he have been fast fasting? must we have been fast fasting? must you have been fast fasting? must they have been fast fasting?
Interro-negative form
Simple form
must I not fast fast? must you not fast fast? must he not fast fast? must we not fast fast? must you not fast fast? must they not fast fast?
V-ing form
must I not be fast fasting? must you not be fast fasting? must he not be fast fasting? must we not be fast fasting? must you not be fast fasting? must they not be fast fasting?
Perfect
must I not have fast fasted? must you not have fast fasted? must he not have fast fasted? must we not have fast fasted? must you not have fast fasted? must they not have fast fasted?
V-ing perfect
must I not have been fast fasting? must you not have been fast fasting? must he not have been fast fasting? must we not have been fast fasting? must you not have been fast fasting? must they not have been fast fasting?