I can aggrade you can aggrade he can aggrade we can aggrade you can aggrade they can aggrade
V-ing form
I can be aggrading you can be aggrading he can be aggrading we can be aggrading you can be aggrading they can be aggrading
Perfect
I can have aggraded you can have aggraded he can have aggraded we can have aggraded you can have aggraded they can have aggraded
V-ing perfect
I can have been aggrading you can have been aggrading he can have been aggrading we can have been aggrading you can have been aggrading they can have been aggrading
Negation
Simple form
I can't aggrade you can't aggrade he can't aggrade we can't aggrade you can't aggrade they can't aggrade
V-ing form
I can't be aggrading you can't be aggrading he can't be aggrading we can't be aggrading you can't be aggrading they can't be aggrading
Perfect
I can't have aggraded you can't have aggraded he can't have aggraded we can't have aggraded you can't have aggraded they can't have aggraded
V-ing perfect
I can't have been aggrading you can't have been aggrading he can't have been aggrading we can't have been aggrading you can't have been aggrading they can't have been aggrading
Interrogative form
Simple form
can I aggrade? can you aggrade? can he aggrade? can we aggrade? can you aggrade? can they aggrade?
V-ing form
can I be aggrading? can you be aggrading? can he be aggrading? can we be aggrading? can you be aggrading? can they be aggrading?
Perfect
can I have aggraded? can you have aggraded? can he have aggraded? can we have aggraded? can you have aggraded? can they have aggraded?
V-ing perfect
can I have been aggrading? can you have been aggrading? can he have been aggrading? can we have been aggrading? can you have been aggrading? can they have been aggrading?
Interro-negative form
Simple form
can't I aggrade? can't you aggrade? can't he aggrade? can't we aggrade? can't you aggrade? can't they aggrade?
V-ing form
can't I be aggrading? can't you be aggrading? can't he be aggrading? can't we be aggrading? can't you be aggrading? can't they be aggrading?
Perfect
can't I have aggraded? can't you have aggraded? can't he have aggraded? can't we have aggraded? can't you have aggraded? can't they have aggraded?
V-ing perfect
can't I have been aggrading? can't you have been aggrading? can't he have been aggrading? can't we have been aggrading? can't you have been aggrading? can't they have been aggrading?