C11111211113313112113313331333133313331333132313331333133313332112312131   >>    C1111121111331311211331333133313331333133313231333133313331333211231213   <<    C11111211113313112113313331333133313331333132313331333133313332112312133   >>      C11111211113313112113313331333133313331333132313331333133313332112312132   >>