Tirohia te wāhanga i raro nei, kātahi ka whakautu i te pātai i muri mai i te reo kotahi me te wāhanga:  Passage: He tohu i muri i te tohu (penei i te tohu) he roopu ranei e tohu ana i te waa e whakaaetia ana kia puta he waahanga o mua. Ko nga taurangi tino noa ko te tohu patai?, te asterisk * (i ahu mai i te whetu Kleene), me te tohu taapiri + (Kleene plus).WildcardKo te kaari mohoao. e pa ana ki tetahi tohu. Hei tauira, ka ōrite a.b ki tētahi aho e mau ana i te "a", kātahi ki tētahi atu pūāhua, kātahi ki te "b", ka ōrite a.*b ki tētahi aho e mau ana i te "a" me te "b" i tētahi wā i muri mai.  Pātai: He aha te momo tohu?
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