C22212323232133313113313331333132313331323133313133113133123223121   >>    C2221232323213331311331333133313231333132313331313311313312322312   <<    C22212323232133313113313331333132313331323133313133113133123223123   >>      C22212323232133313113313331333132313331323133313133113133123223122   >>