The spelling of the word "delko" can be explained using the International Phonetic Alphabet (IPA). The first sound is the "d" sound, which is represented as /d/. The second sound is the "eh" sound, represented as /ɛ/. The third sound is the "l" sound, represented as /l/. The fourth sound is the "k" sound, represented as /k/. The final sound is the "oh" sound, represented as /oʊ/. Overall, the spelling of "delko" is a combination of the sounds /d/ + /ɛ/ + /l/ + /k/ + /oʊ/.