C22213331333133313112331323133313331323112113313331311331323133313232221   >>    C2221333133313331311233132313331333132311211331333131133132313331323222   <<    C22213331333133313112331323133313331323112113313331311331323133313232223   >>      C22213331333133313112331323133313331323112113313331311331323133313232222   >>