C11112331312111112111133133313231333132313331333132213331323221121   >>    C1111233131211111211113313331323133313231333133313221333132322112   <<    C11112331312111112111133133313231333132313331333132213331323221123   >>      C11112331312111112111133133313231333132313331333132213331323221122   >>