C1111233131211111211113313331333133313221211113313331333133313121133131233131   >>    C111123313121111121111331333133313331322121111331333133313331312113313123313   <<    C1111233131211111211113313331333133313221211113313331333133313121133131233133   >>      C1111233131211111211113313331333133313221211113313331333133313121133131233132   >>