C312312111133131121333133313113313331333133313331331121111331333132313233221   >>    C31231211113313112133313331311331333133313331333133112111133133313231323322   <<    C312312111133131121333133313113313331333133313331331121111331333132313233223   >>      C312312111133131121333133313113313331333133313331331121111331333132313233222   >>