I can diffract you can diffract he can diffract we can diffract you can diffract they can diffract
V-ing form
I can be diffracting you can be diffracting he can be diffracting we can be diffracting you can be diffracting they can be diffracting
Perfect
I can have diffracted you can have diffracted he can have diffracted we can have diffracted you can have diffracted they can have diffracted
V-ing perfect
I can have been diffracting you can have been diffracting he can have been diffracting we can have been diffracting you can have been diffracting they can have been diffracting
Negation
Simple form
I can't diffract you can't diffract he can't diffract we can't diffract you can't diffract they can't diffract
V-ing form
I can't be diffracting you can't be diffracting he can't be diffracting we can't be diffracting you can't be diffracting they can't be diffracting
Perfect
I can't have diffracted you can't have diffracted he can't have diffracted we can't have diffracted you can't have diffracted they can't have diffracted
V-ing perfect
I can't have been diffracting you can't have been diffracting he can't have been diffracting we can't have been diffracting you can't have been diffracting they can't have been diffracting
Interrogative form
Simple form
can I diffract? can you diffract? can he diffract? can we diffract? can you diffract? can they diffract?
V-ing form
can I be diffracting? can you be diffracting? can he be diffracting? can we be diffracting? can you be diffracting? can they be diffracting?
Perfect
can I have diffracted? can you have diffracted? can he have diffracted? can we have diffracted? can you have diffracted? can they have diffracted?
V-ing perfect
can I have been diffracting? can you have been diffracting? can he have been diffracting? can we have been diffracting? can you have been diffracting? can they have been diffracting?
Interro-negative form
Simple form
can't I diffract? can't you diffract? can't he diffract? can't we diffract? can't you diffract? can't they diffract?
V-ing form
can't I be diffracting? can't you be diffracting? can't he be diffracting? can't we be diffracting? can't you be diffracting? can't they be diffracting?
Perfect
can't I have diffracted? can't you have diffracted? can't he have diffracted? can't we have diffracted? can't you have diffracted? can't they have diffracted?
V-ing perfect
can't I have been diffracting? can't you have been diffracting? can't he have been diffracting? can't we have been diffracting? can't you have been diffracting? can't they have been diffracting?