C11112331312111112111133133313231333132313331333121133132211111   >>    C1111233131211111211113313331323133313231333133312113313221111   <<    C11112331312111112111133133313231333132313331333121133132211113   >>      C11112331312111112111133133313231333132313331333121133132211112   >>