C22212323232133313113313331333132313331323133313333221232223311321   >>    C2221232323213331311331333133313231333132313331333322123222331132   <<    C22212323232133313113313331333132313331323133313333221232223311323   >>      C22212323232133313113313331333132313331323133313333221232223311322   >>