C1112212323132313132313132313232233131323231323133313232213233221   >>    C111221232313231313231313231323223313132323132313331323221323322   <<    C1112212323132313132313132313232233131323231323133313232213233223   >>      C1112212323132313132313132313232233131323231323133313232213233222   >>