C12313211232233312111111312111133133313331323133313331122332321223113311   >>    C1231321123223331211111131211113313331333132313331333112233232122311331   <<    C12313211232233312111111312111133133313331323133313331122332321223113313   >>      C12313211232233312111111312111133133313331323133313331122332321223113312   >>