C11112331312111112111133132313331333133313233313113313331333131133132323231   >>    C1111233131211111211113313231333133313331323331311331333133313113313232323   <<    C11112331312111112111133132313331333133313233313113313331333131133132323233   >>      C11112331312111112111133132313331333133313233313113313331333131133132323232   >>