Pronunciation: [pˌiːˈɛnkˈɒs] (IPA)
Correct spelling for the English word "PNCOS" is [pˌiːˈɛnkˈɒs], [pˌiːˈɛnkˈɒs], [p_ˌiː__ˈɛ_n_k_ˈɒ_s] (IPA phonetic alphabet).