C1111121111331311211331333133313331333133313231333133313331333121111132322121   >>    C111112111133131121133133313331333133313331323133313331333133312111113232212   <<    C1111121111331311211331333133313331333133313231333133313331333121111132322123   >>      C1111121111331311211331333133313331333133313231333133313331333121111132322122   >>