English verb conjugation
CAN OVERGRADE

Regular verb: overgrade - overgraded - overgraded

Affirmation

Simple form	V-ing form
I can overgrade you can overgrade he can overgrade we can overgrade you can overgrade they can overgrade	I can be overgrading you can be overgrading he can be overgrading we can be overgrading you can be overgrading they can be overgrading
Perfect	V-ing perfect
I can have overgraded you can have overgraded he can have overgraded we can have overgraded you can have overgraded they can have overgraded	I can have been overgrading you can have been overgrading he can have been overgrading we can have been overgrading you can have been overgrading they can have been overgrading

Negation

Simple form	V-ing form
I cannot overgrade you cannot overgrade he cannot overgrade we cannot overgrade you cannot overgrade they cannot overgrade	I cannot be overgrading you cannot be overgrading he cannot be overgrading we cannot be overgrading you cannot be overgrading they cannot be overgrading
Perfect	V-ing perfect
I cannot have overgraded you cannot have overgraded he cannot have overgraded we cannot have overgraded you cannot have overgraded they cannot have overgraded	I cannot have been overgrading you cannot have been overgrading he cannot have been overgrading we cannot have been overgrading you cannot have been overgrading they cannot have been overgrading

Interrogative form

Simple form	V-ing form
can I overgrade? can you overgrade? can he overgrade? can we overgrade? can you overgrade? can they overgrade?	can I be overgrading? can you be overgrading? can he be overgrading? can we be overgrading? can you be overgrading? can they be overgrading?
Perfect	V-ing perfect
can I have overgraded? can you have overgraded? can he have overgraded? can we have overgraded? can you have overgraded? can they have overgraded?	can I have been overgrading? can you have been overgrading? can he have been overgrading? can we have been overgrading? can you have been overgrading? can they have been overgrading?

Interro-negative form

Simple form	V-ing form
can I not overgrade? can you not overgrade? can he not overgrade? can we not overgrade? can you not overgrade? can they not overgrade?	can I not be overgrading? can you not be overgrading? can he not be overgrading? can we not be overgrading? can you not be overgrading? can they not be overgrading?
Perfect	V-ing perfect
can I not have overgraded? can you not have overgraded? can he not have overgraded? can we not have overgraded? can you not have overgraded? can they not have overgraded?	can I not have been overgrading? can you not have been overgrading? can he not have been overgrading? can we not have been overgrading? can you not have been overgrading? can they not have been overgrading?