C1111233131211111211113313231333133313331323331333131133132112231   >>    C111123313121111121111331323133313331333132333133313113313211223   <<    C1111233131211111211113313231333133313331323331333131133132112233   >>      C1111233131211111211113313231333133313331323331333131133132112232   >>