C1111233131211111211113313331333133313232313331333131121133132112131   >>    C111123313121111121111331333133313331323231333133313112113313211213   <<    C1111233131211111211113313331333133313232313331333131121133132112133   >>      C1111233131211111211113313331333133313232313331333131121133132112132   >>