C1111233131211111211113313331333133313331333133313331333133313232213113321   >>    C111123313121111121111331333133313331333133313331333133313331323221311332   <<    C1111233131211111211113313331333133313331333133313331333133313232213113323   >>      C1111233131211111211113313331333133313331333133313331333133313232213113322   >>