C21221212121211331322132313132313231313232233132313223313232211312331   >>    C2122121212121133132213231313231323131323223313231322331323221131233   <<    C21221212121211331322132313132313231313232233132313223313232211312333   >>      C21221212121211331322132313132313231313232233132313223313232211312332   >>