English verb conjugation
MAY BIRCH

Regular verb: birch - birched - birched

Affirmation

Simple form	V-ing form
I may birch you may birch he may birch we may birch you may birch they may birch	I may be birching you may be birching he may be birching we may be birching you may be birching they may be birching
Perfect	V-ing perfect
I may have birched you may have birched he may have birched we may have birched you may have birched they may have birched	I may have been birching you may have been birching he may have been birching we may have been birching you may have been birching they may have been birching

Negation

Simple form	V-ing form
I mayn't birch you mayn't birch he mayn't birch we mayn't birch you mayn't birch they mayn't birch	I mayn't be birching you mayn't be birching he mayn't be birching we mayn't be birching you mayn't be birching they mayn't be birching
Perfect	V-ing perfect
I mayn't have birched you mayn't have birched he mayn't have birched we mayn't have birched you mayn't have birched they mayn't have birched	I mayn't have been birching you mayn't have been birching he mayn't have been birching we mayn't have been birching you mayn't have been birching they mayn't have been birching

Interrogative form

Simple form	V-ing form
may I birch? may you birch? may he birch? may we birch? may you birch? may they birch?	may I be birching? may you be birching? may he be birching? may we be birching? may you be birching? may they be birching?
Perfect	V-ing perfect
may I have birched? may you have birched? may he have birched? may we have birched? may you have birched? may they have birched?	may I have been birching? may you have been birching? may he have been birching? may we have been birching? may you have been birching? may they have been birching?

Interro-negative form

Simple form	V-ing form
mayn't I birch? mayn't you birch? mayn't he birch? mayn't we birch? mayn't you birch? mayn't they birch?	mayn't I be birching? mayn't you be birching? mayn't he be birching? mayn't we be birching? mayn't you be birching? mayn't they be birching?
Perfect	V-ing perfect
mayn't I have birched? mayn't you have birched? mayn't he have birched? mayn't we have birched? mayn't you have birched? mayn't they have birched?	mayn't I have been birching? mayn't you have been birching? mayn't he have been birching? mayn't we have been birching? mayn't you have been birching? mayn't they have been birching?