Pronunciation: [ɪˈiːnə͡ʊ] (IPA)
Correct spelling for the English word "iino" is [ɪˈiːnə͡ʊ], [ɪˈiːnəʊ], [ɪ__ˈiː_n_əʊ] (IPA phonetic alphabet).
Correct spelling for iino