C22212323232133313113313331333132313331323133313133113133132123121   >>    C2221232323213331311331333133313231333132313331313311313313212312   <<    C22212323232133313113313331333132313331323133313133113133132123123   >>      C22212323232133313113313331333132313331323133313133113133132123122   >>