C11112331333132311331333133112111133132313232233132313311231231   >>    C1111233133313231133133313311211113313231323223313231331123123   <<    C11112331333132311331333133112111133132313232233132313311231233   >>      C11112331333132311331333133112111133132313232233132313311231232   >>