C12313211232233312111111312111133133313331323221312132221331111   >>    C1231321123223331211111131211113313331333132322131213222133111   <<    C12313211232233312111111312111133133313331323221312132221331113   >>      C12313211232233312111111312111133133313331323221312132221331112   >>