C111123313121111121111331333133313331333131233133313311231233133322131   >>    C11112331312111112111133133313331333133313123313331331123123313332213   <<    C111123313121111121111331333133313331333131233133313311231233133322133   >>      C111123313121111121111331333133313331333131233133313311231233133322132   >>