C21221212121211331322132313132313231313232233132323132323132211   >>    C2122121212121133132213231313231323131323223313232313232313221   <<    C21221212121211331322132313132313231313232233132323132323132213   >>      C21221212121211331322132313132313231313232233132323132323132212   >>