C2221333133313331311233132313331333133313232123313331333131332211   >>    C222133313331333131123313231333133313331323212331333133313133221   <<    C2221333133313331311233132313331333133313232123313331333131332213   >>      C2221333133313331311233132313331333133313232123313331333131332212   >>