Interesting stuff, was curious how they search repeated letters through ngram index? I understand their example search with the string “limits” (find intersecti

Interesting stuff, was curious how they search repeated letters through ngram index? I understand their example search with the string “limits” (find intersection of “lim”, “imi”, “mit” and “its”. However, if the user wants to search the string “aaaaa” how would they go about searching that?