himselfherselfitselfthemselves
The terms "himself," "herself," "itself," and "themselves" are reflexive pronouns in the English language. They are used when the subject of a sentence is also the object of the verb, referring back to the same person or thing. For example, in the sentence "John hurt himself," John is both the subject performing the action and the object receiving it. Similarly, in "Mary enjoyed herself at the party," Mary is the subject and the object of her own enjoyment. For inanimate objects or animals, "itself" is used, as in "The cat washed itself."
"Themselves" is the plural form of these reflexive pronouns. It is used when the subject is plural