C1111233131211111211113313331333133313221211113313331333133313223322131   >>    C111123313121111121111331333133313331322121111331333133313331322332213   <<    C1111233131211111211113313331333133313221211113313331333133313223322133   >>      C1111233131211111211113313331333133313221211113313331333133313223322132   >>