The spelling of the word "PRiEDO" can be explained phonetically using the International Phonetic Alphabet (IPA). The first letter "P" corresponds to the voiceless bilabial plosive sound /p/. The letter "R" represents the alveolar trill /r/. The following letter "i" indicates a short vowel sound /ɪ/. The letter "E" represents a mid front unrounded vowel sound /ɛ/. Lastly, the letter "D" corresponds to the voiced dental plosive sound /d/. Therefore, the spelling of "PRiEDO" can be broken down phonetically as /p/ + /r/ + /ɪ/ + /ɛ/ + /d/.