C312312111111331312111133133313331331121111331323221211113313331322331322123231   >>    C31231211111133131211113313331333133112111133132322121111331333132233132212323   <<    C312312111111331312111133133313331331121111331323221211113313331322331322123233   >>      C312312111111331312111133133313331331121111331323221211113313331322331322123232   >>