C21221212121211331322132313132313231313232233132313223313311232313231311311   >>    C2122121212121133132213231313231323131323223313231322331331123231323131131   <<    C21221212121211331322132313132313231313232233132313223313311232313231311313   >>      C21221212121211331322132313132313231313232233132313223313311232313231311312   >>