I could admix you could admix she could admix we could admix you could admix they could admix
V-ing form
I could be admixing you could be admixing she could be admixing we could be admixing you could be admixing they could be admixing
Perfect
I could have admixed you could have admixed she could have admixed we could have admixed you could have admixed they could have admixed
V-ing perfect
I could have been admixing you could have been admixing she could have been admixing we could have been admixing you could have been admixing they could have been admixing
Negation
Simple form
I could not admix you could not admix she could not admix we could not admix you could not admix they could not admix
V-ing form
I could not be admixing you could not be admixing she could not be admixing we could not be admixing you could not be admixing they could not be admixing
Perfect
I could not have admixed you could not have admixed she could not have admixed we could not have admixed you could not have admixed they could not have admixed
V-ing perfect
I could not have been admixing you could not have been admixing she could not have been admixing we could not have been admixing you could not have been admixing they could not have been admixing
Interrogative form
Simple form
could I admix? could you admix? could she admix? could we admix? could you admix? could they admix?
V-ing form
could I be admixing? could you be admixing? could she be admixing? could we be admixing? could you be admixing? could they be admixing?
Perfect
could I have admixed? could you have admixed? could she have admixed? could we have admixed? could you have admixed? could they have admixed?
V-ing perfect
could I have been admixing? could you have been admixing? could she have been admixing? could we have been admixing? could you have been admixing? could they have been admixing?
Interro-negative form
Simple form
could I not admix? could you not admix? could she not admix? could we not admix? could you not admix? could they not admix?
V-ing form
could I not be admixing? could you not be admixing? could she not be admixing? could we not be admixing? could you not be admixing? could they not be admixing?
Perfect
could I not have admixed? could you not have admixed? could she not have admixed? could we not have admixed? could you not have admixed? could they not have admixed?
V-ing perfect
could I not have been admixing? could you not have been admixing? could she not have been admixing? could we not have been admixing? could you not have been admixing? could they not have been admixing?