English verb conjugation
COULD INTERMIX

Regular verb: intermix - intermixed - intermixed

Affirmation

Simple form	V-ing form
I could intermix you could intermix he could intermix we could intermix you could intermix they could intermix	I could be intermixing you could be intermixing he could be intermixing we could be intermixing you could be intermixing they could be intermixing
Perfect	V-ing perfect
I could have intermixed you could have intermixed he could have intermixed we could have intermixed you could have intermixed they could have intermixed	I could have been intermixing you could have been intermixing he could have been intermixing we could have been intermixing you could have been intermixing they could have been intermixing

Negation

Simple form	V-ing form
I couldn't intermix you couldn't intermix he couldn't intermix we couldn't intermix you couldn't intermix they couldn't intermix	I couldn't be intermixing you couldn't be intermixing he couldn't be intermixing we couldn't be intermixing you couldn't be intermixing they couldn't be intermixing
Perfect	V-ing perfect
I couldn't have intermixed you couldn't have intermixed he couldn't have intermixed we couldn't have intermixed you couldn't have intermixed they couldn't have intermixed	I couldn't have been intermixing you couldn't have been intermixing he couldn't have been intermixing we couldn't have been intermixing you couldn't have been intermixing they couldn't have been intermixing

Interrogative form

Simple form	V-ing form
could I intermix? could you intermix? could he intermix? could we intermix? could you intermix? could they intermix?	could I be intermixing? could you be intermixing? could he be intermixing? could we be intermixing? could you be intermixing? could they be intermixing?
Perfect	V-ing perfect
could I have intermixed? could you have intermixed? could he have intermixed? could we have intermixed? could you have intermixed? could they have intermixed?	could I have been intermixing? could you have been intermixing? could he have been intermixing? could we have been intermixing? could you have been intermixing? could they have been intermixing?

Interro-negative form

Simple form	V-ing form
couldn't I intermix? couldn't you intermix? couldn't he intermix? couldn't we intermix? couldn't you intermix? couldn't they intermix?	couldn't I be intermixing? couldn't you be intermixing? couldn't he be intermixing? couldn't we be intermixing? couldn't you be intermixing? couldn't they be intermixing?
Perfect	V-ing perfect
couldn't I have intermixed? couldn't you have intermixed? couldn't he have intermixed? couldn't we have intermixed? couldn't you have intermixed? couldn't they have intermixed?	couldn't I have been intermixing? couldn't you have been intermixing? couldn't he have been intermixing? couldn't we have been intermixing? couldn't you have been intermixing? couldn't they have been intermixing?