C111112111133131121133133313331333133313331322121111331333133313231132121   >>    C11111211113313112113313331333133313331333132212111133133313331323113212   <<    C111112111133131121133133313331333133313331322121111331333133313231132123   >>      C111112111133131121133133313331333133313331322121111331333133313231132122   >>