English verb conjugation
CAN FAST FAST

Regular verb: fast fast - fast fasted - fast fasted

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I can fast fast you can fast fast he can fast fast we can fast fast you can fast fast they can fast fast	I can be fast fasting you can be fast fasting he can be fast fasting we can be fast fasting you can be fast fasting they can be fast fasting
Perfect	V-ing perfect
I can have fast fasted you can have fast fasted he can have fast fasted we can have fast fasted you can have fast fasted they can have fast fasted	I can have been fast fasting you can have been fast fasting he can have been fast fasting we can have been fast fasting you can have been fast fasting they can have been fast fasting

Negation

Simple form	V-ing form
I cannot fast fast you cannot fast fast he cannot fast fast we cannot fast fast you cannot fast fast they cannot fast fast	I cannot be fast fasting you cannot be fast fasting he cannot be fast fasting we cannot be fast fasting you cannot be fast fasting they cannot be fast fasting
Perfect	V-ing perfect
I cannot have fast fasted you cannot have fast fasted he cannot have fast fasted we cannot have fast fasted you cannot have fast fasted they cannot have fast fasted	I cannot have been fast fasting you cannot have been fast fasting he cannot have been fast fasting we cannot have been fast fasting you cannot have been fast fasting they cannot have been fast fasting

Interrogative form

Simple form	V-ing form
can I fast fast? can you fast fast? can he fast fast? can we fast fast? can you fast fast? can they fast fast?	can I be fast fasting? can you be fast fasting? can he be fast fasting? can we be fast fasting? can you be fast fasting? can they be fast fasting?
Perfect	V-ing perfect
can I have fast fasted? can you have fast fasted? can he have fast fasted? can we have fast fasted? can you have fast fasted? can they have fast fasted?	can I have been fast fasting? can you have been fast fasting? can he have been fast fasting? can we have been fast fasting? can you have been fast fasting? can they have been fast fasting?

Interro-negative form

Simple form	V-ing form
can I not fast fast? can you not fast fast? can he not fast fast? can we not fast fast? can you not fast fast? can they not fast fast?	can I not be fast fasting? can you not be fast fasting? can he not be fast fasting? can we not be fast fasting? can you not be fast fasting? can they not be fast fasting?
Perfect	V-ing perfect
can I not have fast fasted? can you not have fast fasted? can he not have fast fasted? can we not have fast fasted? can you not have fast fasted? can they not have fast fasted?	can I not have been fast fasting? can you not have been fast fasting? can he not have been fast fasting? can we not have been fast fasting? can you not have been fast fasting? can they not have been fast fasting?