C22213331333133313112331323133313331333133313233211331313232111221   >>    C2221333133313331311233132313331333133313331323321133131323211122   <<    C22213331333133313112331323133313331333133313233211331313232111223   >>      C22213331333133313112331323133313331333133313233211331313232111222   >>