C21221212121211331322132313132313132313232233132313223313133311   >>    C2122121212121133132213231313231313231323223313231322331313331   <<    C21221212121211331322132313132313132313232233132313223313133313   >>      C21221212121211331322132313132313132313232233132313223313133312   >>