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 mayn't crib you mayn't crib he mayn't crib we mayn't crib you mayn't crib they mayn't crib	I mayn't be cribbing you mayn't be cribbing he mayn't be cribbing we mayn't be cribbing you mayn't be cribbing they mayn't be cribbing
Perfect	V-ing perfect
I mayn't have cribbed you mayn't have cribbed he mayn't have cribbed we mayn't have cribbed you mayn't have cribbed they mayn't have cribbed	I mayn't have been cribbing you mayn't have been cribbing he mayn't have been cribbing we mayn't have been cribbing you mayn't have been cribbing they mayn't 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
mayn't I crib? mayn't you crib? mayn't he crib? mayn't we crib? mayn't you crib? mayn't they crib?	mayn't I be cribbing? mayn't you be cribbing? mayn't he be cribbing? mayn't we be cribbing? mayn't you be cribbing? mayn't they be cribbing?
Perfect	V-ing perfect
mayn't I have cribbed? mayn't you have cribbed? mayn't he have cribbed? mayn't we have cribbed? mayn't you have cribbed? mayn't they have cribbed?	mayn't I have been cribbing? mayn't you have been cribbing? mayn't he have been cribbing? mayn't we have been cribbing? mayn't you have been cribbing? mayn't they have been cribbing?