C12313211232233312111111312111133133313331323133311233111321111211   >>    C1231321123223331211111131211113313331333132313331123311132111121   <<    C12313211232233312111111312111133133313331323133311233111321111213   >>      C12313211232233312111111312111133133313331323133311233111321111212   >>