C312312111111331312111133133313331322331333133313331333131323311221   >>    C31231211111133131211113313331333132233133313331333133313132331122   <<    C312312111111331312111133133313331322331333133313331333131323311223   >>      C312312111111331312111133133313331322331333133313331333131323311222   >>