C31231211111133131211113313331323133313113313223133313331333133112233221131   >>    C3123121111113313121111331333132313331311331322313331333133313311223322113   <<    C31231211111133131211113313331323133313113313223133313331333133112233221133   >>      C31231211111133131211113313331323133313113313223133313331333133112233221132   >>