C21221212121211331322132313132313231313232233132313223313231311113311   >>    C2122121212121133132213231313231323131323223313231322331323131111331   <<    C21221212121211331322132313132313231313232233132313223313231311113313   >>      C21221212121211331322132313132313231313232233132313223313231311113312   >>