C22213331333133313112331323133313331333133313233213331313231211231   >>    C2221333133313331311233132313331333133313331323321333131323121123   <<    C22213331333133313112331323133313331333133313233213331313231211233   >>      C22213331333133313112331323133313331333133313233213331313231211232   >>