C11112331312111112111133133313331333132323133313331311212111133133313112111221   >>    C1111233131211111211113313331333133313232313331333131121211113313331311211122   <<    C11112331312111112111133133313331333132323133313331311212111133133313112111223   >>      C11112331312111112111133133313331333132323133313331311212111133133313112111222   >>