C12313211232233312111111312111133133313331323221312132213221111   >>    C1231321123223331211111131211113313331333132322131213221322111   <<    C12313211232233312111111312111133133313331323221312132213221113   >>      C12313211232233312111111312111133133313331323221312132213221112   >>