Pronunciation: [nˈɑːstə͡ʊnəp] (IPA)
Correct spelling for the English word "NARSTONEOP" is [nˈɑːstə͡ʊnəp], [nˈɑːstəʊnəp], [n_ˈɑː_s_t_əʊ_n_ə_p] (IPA phonetic alphabet).