English verb conjugation
MAY CROAK

Regular verb: croak - croaked - croaked

Affirmation

Simple form	V-ing form
I may croak you may croak he may croak we may croak you may croak they may croak	I may be croaking you may be croaking he may be croaking we may be croaking you may be croaking they may be croaking
Perfect	V-ing perfect
I may have croaked you may have croaked he may have croaked we may have croaked you may have croaked they may have croaked	I may have been croaking you may have been croaking he may have been croaking we may have been croaking you may have been croaking they may have been croaking

Negation

Simple form	V-ing form
I mayn't croak you mayn't croak he mayn't croak we mayn't croak you mayn't croak they mayn't croak	I mayn't be croaking you mayn't be croaking he mayn't be croaking we mayn't be croaking you mayn't be croaking they mayn't be croaking
Perfect	V-ing perfect
I mayn't have croaked you mayn't have croaked he mayn't have croaked we mayn't have croaked you mayn't have croaked they mayn't have croaked	I mayn't have been croaking you mayn't have been croaking he mayn't have been croaking we mayn't have been croaking you mayn't have been croaking they mayn't have been croaking

Interrogative form

Simple form	V-ing form
may I croak? may you croak? may he croak? may we croak? may you croak? may they croak?	may I be croaking? may you be croaking? may he be croaking? may we be croaking? may you be croaking? may they be croaking?
Perfect	V-ing perfect
may I have croaked? may you have croaked? may he have croaked? may we have croaked? may you have croaked? may they have croaked?	may I have been croaking? may you have been croaking? may he have been croaking? may we have been croaking? may you have been croaking? may they have been croaking?

Interro-negative form

Simple form	V-ing form
mayn't I croak? mayn't you croak? mayn't he croak? mayn't we croak? mayn't you croak? mayn't they croak?	mayn't I be croaking? mayn't you be croaking? mayn't he be croaking? mayn't we be croaking? mayn't you be croaking? mayn't they be croaking?
Perfect	V-ing perfect
mayn't I have croaked? mayn't you have croaked? mayn't he have croaked? mayn't we have croaked? mayn't you have croaked? mayn't they have croaked?	mayn't I have been croaking? mayn't you have been croaking? mayn't he have been croaking? mayn't we have been croaking? mayn't you have been croaking? mayn't they have been croaking?