C12313211232233312111111312111133133313331333112331311311213311322131   >>    C1231321123223331211111131211113313331333133311233131131121331132213   <<    C12313211232233312111111312111133133313331333112331311311213311322133   >>      C12313211232233312111111312111133133313331333112331311311213311322132   >>