I could adulterate you could adulterate she could adulterate we could adulterate you could adulterate they could adulterate
V-ing form
I could be adulterating you could be adulterating she could be adulterating we could be adulterating you could be adulterating they could be adulterating
Perfect
I could have adulterated you could have adulterated she could have adulterated we could have adulterated you could have adulterated they could have adulterated
V-ing perfect
I could have been adulterating you could have been adulterating she could have been adulterating we could have been adulterating you could have been adulterating they could have been adulterating
Negation
Simple form
I could not adulterate you could not adulterate she could not adulterate we could not adulterate you could not adulterate they could not adulterate
V-ing form
I could not be adulterating you could not be adulterating she could not be adulterating we could not be adulterating you could not be adulterating they could not be adulterating
Perfect
I could not have adulterated you could not have adulterated she could not have adulterated we could not have adulterated you could not have adulterated they could not have adulterated
V-ing perfect
I could not have been adulterating you could not have been adulterating she could not have been adulterating we could not have been adulterating you could not have been adulterating they could not have been adulterating
Interrogative form
Simple form
could I adulterate? could you adulterate? could she adulterate? could we adulterate? could you adulterate? could they adulterate?
V-ing form
could I be adulterating? could you be adulterating? could she be adulterating? could we be adulterating? could you be adulterating? could they be adulterating?
Perfect
could I have adulterated? could you have adulterated? could she have adulterated? could we have adulterated? could you have adulterated? could they have adulterated?
V-ing perfect
could I have been adulterating? could you have been adulterating? could she have been adulterating? could we have been adulterating? could you have been adulterating? could they have been adulterating?
Interro-negative form
Simple form
could I not adulterate? could you not adulterate? could she not adulterate? could we not adulterate? could you not adulterate? could they not adulterate?
V-ing form
could I not be adulterating? could you not be adulterating? could she not be adulterating? could we not be adulterating? could you not be adulterating? could they not be adulterating?
Perfect
could I not have adulterated? could you not have adulterated? could she not have adulterated? could we not have adulterated? could you not have adulterated? could they not have adulterated?
V-ing perfect
could I not have been adulterating? could you not have been adulterating? could she not have been adulterating? could we not have been adulterating? could you not have been adulterating? could they not have been adulterating?