C21221212121211331322132313132313231313232233132313223313123123231   >>    C2122121212121133132213231313231323131323223313231322331312312323   <<    C21221212121211331322132313132313231313232233132313223313123123233   >>      C21221212121211331322132313132313231313232233132313223313123123232   >>