Do chuardach - information ((permutations problems) or (preservation problems)) functions e lilles* - níor mheaitseáil seo acmhainn ar bith.

B'fhéidir gur cheart duit triail a bhaint as roinnt athruithe sa litriú:
permutations problems » presentations problems, equations problems, perturbation problems
preservation problems » presentations problems, preservation process, respiration problems
e lilles » _ gilles, _ lille, d lilley

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