C11112331312111112111133133313231333132313331333132211312231321   >>    C1111233131211111211113313331323133313231333133313221131223132   <<    C11112331312111112111133133313231333132313331333132211312231323   >>      C11112331312111112111133133313231333132313331333132211312231322   >>