C1111233131211111211113313331333133313332213113121111331333132213231132233121   >>    C111123313121111121111331333133313331333221311312111133133313221323113223312   <<    C1111233131211111211113313331333133313332213113121111331333132213231132233123   >>      C1111233131211111211113313331333133313332213113121111331333132213231132233122   >>