English verb conjugation
COULD DIFFRACT

Regular verb: diffract - diffracted - diffracted

Affirmation

Simple form	V-ing form
I could diffract you could diffract he could diffract we could diffract you could diffract they could diffract	I could be diffracting you could be diffracting he could be diffracting we could be diffracting you could be diffracting they could be diffracting
Perfect	V-ing perfect
I could have diffracted you could have diffracted he could have diffracted we could have diffracted you could have diffracted they could have diffracted	I could have been diffracting you could have been diffracting he could have been diffracting we could have been diffracting you could have been diffracting they could have been diffracting

Negation

Simple form	V-ing form
I couldn't diffract you couldn't diffract he couldn't diffract we couldn't diffract you couldn't diffract they couldn't diffract	I couldn't be diffracting you couldn't be diffracting he couldn't be diffracting we couldn't be diffracting you couldn't be diffracting they couldn't be diffracting
Perfect	V-ing perfect
I couldn't have diffracted you couldn't have diffracted he couldn't have diffracted we couldn't have diffracted you couldn't have diffracted they couldn't have diffracted	I couldn't have been diffracting you couldn't have been diffracting he couldn't have been diffracting we couldn't have been diffracting you couldn't have been diffracting they couldn't have been diffracting

Interrogative form

Simple form	V-ing form
could I diffract? could you diffract? could he diffract? could we diffract? could you diffract? could they diffract?	could I be diffracting? could you be diffracting? could he be diffracting? could we be diffracting? could you be diffracting? could they be diffracting?
Perfect	V-ing perfect
could I have diffracted? could you have diffracted? could he have diffracted? could we have diffracted? could you have diffracted? could they have diffracted?	could I have been diffracting? could you have been diffracting? could he have been diffracting? could we have been diffracting? could you have been diffracting? could they have been diffracting?

Interro-negative form

Simple form	V-ing form
couldn't I diffract? couldn't you diffract? couldn't he diffract? couldn't we diffract? couldn't you diffract? couldn't they diffract?	couldn't I be diffracting? couldn't you be diffracting? couldn't he be diffracting? couldn't we be diffracting? couldn't you be diffracting? couldn't they be diffracting?
Perfect	V-ing perfect
couldn't I have diffracted? couldn't you have diffracted? couldn't he have diffracted? couldn't we have diffracted? couldn't you have diffracted? couldn't they have diffracted?	couldn't I have been diffracting? couldn't you have been diffracting? couldn't he have been diffracting? couldn't we have been diffracting? couldn't you have been diffracting? couldn't they have been diffracting?