English verb conjugation
MAY PRACTICE

Regular verb: practice - practiced - practiced

Affirmation

Simple form	V-ing form
I may practice you may practice he may practice we may practice you may practice they may practice	I may be practicing you may be practicing he may be practicing we may be practicing you may be practicing they may be practicing
Perfect	V-ing perfect
I may have practiced you may have practiced he may have practiced we may have practiced you may have practiced they may have practiced	I may have been practicing you may have been practicing he may have been practicing we may have been practicing you may have been practicing they may have been practicing

Negation

Simple form	V-ing form
I mayn't practice you mayn't practice he mayn't practice we mayn't practice you mayn't practice they mayn't practice	I mayn't be practicing you mayn't be practicing he mayn't be practicing we mayn't be practicing you mayn't be practicing they mayn't be practicing
Perfect	V-ing perfect
I mayn't have practiced you mayn't have practiced he mayn't have practiced we mayn't have practiced you mayn't have practiced they mayn't have practiced	I mayn't have been practicing you mayn't have been practicing he mayn't have been practicing we mayn't have been practicing you mayn't have been practicing they mayn't have been practicing

Interrogative form

Simple form	V-ing form
may I practice? may you practice? may he practice? may we practice? may you practice? may they practice?	may I be practicing? may you be practicing? may he be practicing? may we be practicing? may you be practicing? may they be practicing?
Perfect	V-ing perfect
may I have practiced? may you have practiced? may he have practiced? may we have practiced? may you have practiced? may they have practiced?	may I have been practicing? may you have been practicing? may he have been practicing? may we have been practicing? may you have been practicing? may they have been practicing?

Interro-negative form

Simple form	V-ing form
mayn't I practice? mayn't you practice? mayn't he practice? mayn't we practice? mayn't you practice? mayn't they practice?	mayn't I be practicing? mayn't you be practicing? mayn't he be practicing? mayn't we be practicing? mayn't you be practicing? mayn't they be practicing?
Perfect	V-ing perfect
mayn't I have practiced? mayn't you have practiced? mayn't he have practiced? mayn't we have practiced? mayn't you have practiced? mayn't they have practiced?	mayn't I have been practicing? mayn't you have been practicing? mayn't he have been practicing? mayn't we have been practicing? mayn't you have been practicing? mayn't they have been practicing?