C22213331333133313112331323133313331333133313231321123232223221   >>    C2221333133313331311233132313331333133313331323132112323222322   <<    C22213331333133313112331323133313331333133313231321123232223223   >>      C22213331333133313112331323133313331333133313231321123232223222   >>