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Script: Mugihe cy'ibyumweru 21 kugeza kuri 22 nyuma yo gusama, ibihaha bigira ubushobozi bwo guhumeka umwuka. Ibyo byerekana ko umwana aba yakuze kubera ko aba nyuma y'ingobyi ibyo ariko bishoboka kuduhinja tumwe na tumwe. | ||
All ages referenced to fertilization, not last menstrual period. One month = 4 weeks. |