C1111233131211111211113313331333133313331333133313331333133313221233133311211   >>    C111123313121111121111331333133313331333133313331333133313331322123313331121   <<    C1111233131211111211113313331333133313331333133313331333133313221233133311213   >>      C1111233131211111211113313331333133313331333133313331333133313221233133311212   >>