C21221212121211331322132313132313132313232233132313223313231331123232223321   >>    C2122121212121133132213231313231313231323223313231322331323133112323222332   <<    C21221212121211331322132313132313132313232233132313223313231331123232223323   >>      C21221212121211331322132313132313132313232233132313223313231331123232223322   >>