C1111233131211111211113313331333133313221211113313331333133313221311211   >>    C111123313121111121111331333133313331322121111331333133313331322131121   <<    C1111233131211111211113313331333133313221211113313331333133313221311213   >>      C1111233131211111211113313331333133313221211113313331333133313221311212   >>