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<?php $text = "11a. A numbered agenda item\nUnnumbered agenda item\n12. Another numbered agenda item\nAnother UNnumbered agenda item\n13. A numbered agenda item"; if (preg_match_all('/^(\d+[a-z]?\.)\s*(.*(?:\R(?!\d+[a-z]?\.).*)*)/m', $text, $matches)) { print_r(array_combine($matches[1], $matches[2])); }

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