In English, reflexive and reciprocal pronouns must adhere to Principle A: an anaphor (reflexive or reciprocal, such as "each other") must be bound in its governing category (roughly, the clause). Therefore, in syntactic structure it must be lower in structure (it must have an antecedent) and have a direct relationship with its referent. This is called a C-command relationship. For instance, we see that "John cut himself" is grammatical, but "Himself cut John" is not, despite having identical arguments, since "himself", the reflexive, must be lower in structure to John, its referent. Additionally, we see examples like "John said that Mary cut himself" are not grammatical because there is an intermediary noun, "Mary", that disallows the two referents from having a direct relationship.