C11112331312111112111133133313231333132313331333231333133313331333133322211221   >>    C1111233131211111211113313331323133313231333133323133313331333133313332221122   <<    C11112331312111112111133133313231333132313331333231333133313331333133322211223   >>      C11112331312111112111133133313231333132313331333231333133313331333133322211222   >>