C111123313121111121111331333133313331323133313231333133313331333133313233222211   >>    C11112331312111112111133133313331333132313331323133313331333133313331323322221   <<    C111123313121111121111331333133313331323133313231333133313331333133313233222213   >>      C111123313121111121111331333133313331323133313231333133313331333133313233222212   >>