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description = ''' expected internal representation ''' [[test]] pattern = 'a(?!b).*(?<!a)b' pp = '❮a(?=~(b_*)\z){∅}❮.*❯❯(?<=(\A|[^a]))b' [[test]] pattern = 'aa(?!a) *' pp = 'aa(?=~(a_*)\z){∅}❮ *❯'