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 can't overgrade you can't overgrade he can't overgrade we can't overgrade you can't overgrade they can't overgrade	I can't be overgrading you can't be overgrading he can't be overgrading we can't be overgrading you can't be overgrading they can't be overgrading
Perfect	V-ing perfect
I can't have overgraded you can't have overgraded he can't have overgraded we can't have overgraded you can't have overgraded they can't have overgraded	I can't have been overgrading you can't have been overgrading he can't have been overgrading we can't have been overgrading you can't have been overgrading they can't 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't I overgrade? can't you overgrade? can't he overgrade? can't we overgrade? can't you overgrade? can't they overgrade?	can't I be overgrading? can't you be overgrading? can't he be overgrading? can't we be overgrading? can't you be overgrading? can't they be overgrading?
Perfect	V-ing perfect
can't I have overgraded? can't you have overgraded? can't he have overgraded? can't we have overgraded? can't you have overgraded? can't they have overgraded?	can't I have been overgrading? can't you have been overgrading? can't he have been overgrading? can't we have been overgrading? can't you have been overgrading? can't they have been overgrading?