English verb conjugation
MAY RETROGRADE

Regular verb: retrograde - retrograded - retrograded

Affirmation

Simple form	V-ing form
I may retrograde you may retrograde he may retrograde we may retrograde you may retrograde they may retrograde	I may be retrograding you may be retrograding he may be retrograding we may be retrograding you may be retrograding they may be retrograding
Perfect	V-ing perfect
I may have retrograded you may have retrograded he may have retrograded we may have retrograded you may have retrograded they may have retrograded	I may have been retrograding you may have been retrograding he may have been retrograding we may have been retrograding you may have been retrograding they may have been retrograding

Negation

Simple form	V-ing form
I mayn't retrograde you mayn't retrograde he mayn't retrograde we mayn't retrograde you mayn't retrograde they mayn't retrograde	I mayn't be retrograding you mayn't be retrograding he mayn't be retrograding we mayn't be retrograding you mayn't be retrograding they mayn't be retrograding
Perfect	V-ing perfect
I mayn't have retrograded you mayn't have retrograded he mayn't have retrograded we mayn't have retrograded you mayn't have retrograded they mayn't have retrograded	I mayn't have been retrograding you mayn't have been retrograding he mayn't have been retrograding we mayn't have been retrograding you mayn't have been retrograding they mayn't have been retrograding

Interrogative form

Simple form	V-ing form
may I retrograde? may you retrograde? may he retrograde? may we retrograde? may you retrograde? may they retrograde?	may I be retrograding? may you be retrograding? may he be retrograding? may we be retrograding? may you be retrograding? may they be retrograding?
Perfect	V-ing perfect
may I have retrograded? may you have retrograded? may he have retrograded? may we have retrograded? may you have retrograded? may they have retrograded?	may I have been retrograding? may you have been retrograding? may he have been retrograding? may we have been retrograding? may you have been retrograding? may they have been retrograding?

Interro-negative form

Simple form	V-ing form
mayn't I retrograde? mayn't you retrograde? mayn't he retrograde? mayn't we retrograde? mayn't you retrograde? mayn't they retrograde?	mayn't I be retrograding? mayn't you be retrograding? mayn't he be retrograding? mayn't we be retrograding? mayn't you be retrograding? mayn't they be retrograding?
Perfect	V-ing perfect
mayn't I have retrograded? mayn't you have retrograded? mayn't he have retrograded? mayn't we have retrograded? mayn't you have retrograded? mayn't they have retrograded?	mayn't I have been retrograding? mayn't you have been retrograding? mayn't he have been retrograding? mayn't we have been retrograding? mayn't you have been retrograding? mayn't they have been retrograding?