C1111233131211111211113313331333133313331333133313331333133313111122321   >>    C111123313121111121111331333133313331333133313331333133313331311112232   <<    C1111233131211111211113313331333133313331333133313331333133313111122323   >>      C1111233131211111211113313331333133313331333133313331333133313111122322   >>