Pronunciation: [ˌɑːtˌiːˈɛmˌɛsˈɛf] (IPA)
Correct spelling for the English word "RTMSF" is [ˌɑːtˌiːˈɛmˌɛsˈɛf], [ˌɑːtˌiːˈɛmˌɛsˈɛf], [ˌɑː_t_ˌiː__ˈɛ_m_ˌɛ_s_ˈɛ_f] (IPA phonetic alphabet).
Correct spelling for RTMSF