C11112331333132311331333133112111133132313232233312111113231211   >>    C1111233133313231133133313311211113313231323223331211111323121   <<    C11112331333132311331333133112111133132313232233312111113231213   >>      C11112331333132311331333133112111133132313232233312111113231212   >>