どこまでも (translations)→ absolute absolutely all always emphatically extremely forever indefinitely perfect persist stubbornly through very
丹念に (translations)→ assiduously attentively careful carefully clever closely dutifully examination industriously methodically meticulously neatly patiently sedulously thoroughly
熱心に (translations)→ actively alertly busy eagerly earnest fervently hard intently lively seriously steadfast vigorously
忘れず (translations)→ remember scrupulous