C21221212121211331322132313132313231313232233132313223313132313231331123233311   >>    C2122121212121133132213231313231323131323223313231322331313231323133112323331   <<    C21221212121211331322132313132313231313232233132313223313132313231331123233313   >>      C21221212121211331322132313132313231313232233132313223313132313231331123233312   >>