C22213331333133313112331323133313331333133313233211111221311211   >>    C2221333133313331311233132313331333133313331323321111122131121   <<    C22213331333133313112331323133313331333133313233211111221311213   >>      C22213331333133313112331323133313331333133313233211111221311212   >>