C11112331312111112111133132313331333133313233313331311331322231321   >>    C1111233131211111211113313231333133313331323331333131133132223132   <<    C11112331312111112111133132313331333133313233313331311331322231323   >>      C11112331312111112111133132313331333133313233313331311331322231322   >>