C11112331333132311331333133112111133132313232233133313232222131   >>    C1111233133313231133133313311211113313231323223313331323222213   <<    C11112331333132311331333133112111133132313232233133313232222133   >>      C11112331333132311331333133112111133132313232233133313232222132   >>