C31231211111133131211113313331323133313113313223133313331333132322111123231   >>    C3123121111113313121111331333132313331311331322313331333133313232211112323   <<    C31231211111133131211113313331323133313113313223133313331333132322111123233   >>      C31231211111133131211113313331323133313113313223133313331333132322111123232   >>