C111123313121111121111331333133313331333131233133313232212123231   >>    C11112331312111112111133133313331333133313123313331323221212323   <<    C111123313121111121111331333133313331333131233133313232212123233   >>      C111123313121111121111331333133313331333131233133313232212123232   >>