C312312111111331312111133133313331331121111332321333132322112123231   >>    C31231211111133131211113313331333133112111133232133313232211212323   <<    C312312111111331312111133133313331331121111332321333132322112123233   >>      C312312111111331312111133133313331331121111332321333132322112123232   >>