C12313211232233312111111312111133133313331323221312132233211331   >>    C1231321123223331211111131211113313331333132322131213223321133   <<    C12313211232233312111111312111133133313331323221312132233211333   >>      C12313211232233312111111312111133133313331323221312132233211332   >>