The spelling of the word "NIHA" can be analyzed using IPA phonetic transcription. The first letter, "N," represents the voiced alveolar nasal sound /n/. The second letter, "I," represents the high front unrounded vowel sound /i/. The third letter, "H," represents the voiceless glottal fricative sound /h/. Finally, the last letter, "A," represents the open central unrounded vowel sound /a/. Together, these sounds create the unique spelling of the word "NIHA."