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 cannot diffract you cannot diffract he cannot diffract we cannot diffract you cannot diffract they cannot diffract
V-ing form
I cannot be diffracting you cannot be diffracting he cannot be diffracting we cannot be diffracting you cannot be diffracting they cannot be diffracting
Perfect
I cannot have diffracted you cannot have diffracted he cannot have diffracted we cannot have diffracted you cannot have diffracted they cannot have diffracted
V-ing perfect
I cannot have been diffracting you cannot have been diffracting he cannot have been diffracting we cannot have been diffracting you cannot have been diffracting they cannot 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 I not diffract? can you not diffract? can he not diffract? can we not diffract? can you not diffract? can they not diffract?
V-ing form
can I not be diffracting? can you not be diffracting? can he not be diffracting? can we not be diffracting? can you not be diffracting? can they not be diffracting?
Perfect
can I not have diffracted? can you not have diffracted? can he not have diffracted? can we not have diffracted? can you not have diffracted? can they not have diffracted?
V-ing perfect
can I not have been diffracting? can you not have been diffracting? can he not have been diffracting? can we not have been diffracting? can you not have been diffracting? can they not have been diffracting?