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 may not retrograde you may not retrograde he may not retrograde we may not retrograde you may not retrograde they may not retrograde	I may not be retrograding you may not be retrograding he may not be retrograding we may not be retrograding you may not be retrograding they may not be retrograding
Perfect	V-ing perfect
I may not have retrograded you may not have retrograded he may not have retrograded we may not have retrograded you may not have retrograded they may not have retrograded	I may not have been retrograding you may not have been retrograding he may not have been retrograding we may not have been retrograding you may not have been retrograding they may not 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
may I not retrograde? may you not retrograde? may he not retrograde? may we not retrograde? may you not retrograde? may they not retrograde?	may I not be retrograding? may you not be retrograding? may he not be retrograding? may we not be retrograding? may you not be retrograding? may they not be retrograding?
Perfect	V-ing perfect
may I not have retrograded? may you not have retrograded? may he not have retrograded? may we not have retrograded? may you not have retrograded? may they not have retrograded?	may I not have been retrograding? may you not have been retrograding? may he not have been retrograding? may we not have been retrograding? may you not have been retrograding? may they not have been retrograding?