C1112212323132313132313132313232233132333133313231333132313123221   >>    C111221232313231313231313231323223313233313331323133313231312322   <<    C1112212323132313132313132313232233132333133313231333132313123223   >>      C1112212323132313132313132313232233132333133313231333132313123222   >>