C312312111111331312111133133313331322331333133313121111331333133313331323121121   >>    C31231211111133131211113313331333132233133313331312111133133313331333132312112   <<    C312312111111331312111133133313331322331333133313121111331333133313331323121123   >>      C312312111111331312111133133313331322331333133313121111331333133313331323121122   >>