English verb conjugation
MAY CRIB

Regular verb: crib - cribbed - cribbed

Affirmation

Simple form	V-ing form
I may crib you may crib he may crib we may crib you may crib they may crib	I may be cribbing you may be cribbing he may be cribbing we may be cribbing you may be cribbing they may be cribbing
Perfect	V-ing perfect
I may have cribbed you may have cribbed he may have cribbed we may have cribbed you may have cribbed they may have cribbed	I may have been cribbing you may have been cribbing he may have been cribbing we may have been cribbing you may have been cribbing they may have been cribbing

Negation

Simple form	V-ing form
I may not crib you may not crib he may not crib we may not crib you may not crib they may not crib	I may not be cribbing you may not be cribbing he may not be cribbing we may not be cribbing you may not be cribbing they may not be cribbing
Perfect	V-ing perfect
I may not have cribbed you may not have cribbed he may not have cribbed we may not have cribbed you may not have cribbed they may not have cribbed	I may not have been cribbing you may not have been cribbing he may not have been cribbing we may not have been cribbing you may not have been cribbing they may not have been cribbing

Interrogative form

Simple form	V-ing form
may I crib? may you crib? may he crib? may we crib? may you crib? may they crib?	may I be cribbing? may you be cribbing? may he be cribbing? may we be cribbing? may you be cribbing? may they be cribbing?
Perfect	V-ing perfect
may I have cribbed? may you have cribbed? may he have cribbed? may we have cribbed? may you have cribbed? may they have cribbed?	may I have been cribbing? may you have been cribbing? may he have been cribbing? may we have been cribbing? may you have been cribbing? may they have been cribbing?

Interro-negative form

Simple form	V-ing form
may I not crib? may you not crib? may he not crib? may we not crib? may you not crib? may they not crib?	may I not be cribbing? may you not be cribbing? may he not be cribbing? may we not be cribbing? may you not be cribbing? may they not be cribbing?
Perfect	V-ing perfect
may I not have cribbed? may you not have cribbed? may he not have cribbed? may we not have cribbed? may you not have cribbed? may they not have cribbed?	may I not have been cribbing? may you not have been cribbing? may he not have been cribbing? may we not have been cribbing? may you not have been cribbing? may they not have been cribbing?