C11112331333132311331333133313331333132313312111133132311312131   >>    C1111233133313231133133313331333133313231331211113313231131213   <<    C11112331333132311331333133313331333132313312111133132311312133   >>      C11112331333132311331333133313331333132313312111133132311312132   >>