C12313211232233312111111312111133133313331323221312132221223222311   >>    C1231321123223331211111131211113313331333132322131213222122322231   <<    C12313211232233312111111312111133133313331323221312132221223222313   >>      C12313211232233312111111312111133133313331323221312132221223222312   >>