C11112331333132311331333133112111133132313232233132313112113233231   >>    C1111233133313231133133313311211113313231323223313231311211323323   <<    C11112331333132311331333133112111133132313232233132313112113233233   >>      C11112331333132311331333133112111133132313232233132313112113233232   >>