How Do You Spell ATOP MOUNTAIN?

Correct spelling for the English word "atop mountain" is [ɐtˈɒp mˈa͡ʊntɪn], [ɐtˈɒp mˈa‍ʊntɪn], [ɐ_t_ˈɒ_p m_ˈaʊ_n_t_ɪ_n] (IPA phonetic alphabet).