C12313211232233312111111312111133133313331333112331311311213332132211111   >>    C1231321123223331211111131211113313331333133311233131131121333213221111   <<    C12313211232233312111111312111133133313331333112331311311213332132211113   >>      C12313211232233312111111312111133133313331333112331311311213332132211112   >>