C21221212121211331322132313132313231313232233132313223313231213131   >>    C2122121212121133132213231313231323131323223313231322331323121313   <<    C21221212121211331322132313132313231313232233132313223313231213133   >>      C21221212121211331322132313132313231313232233132313223313231213132   >>