The spelling of "ing red" can be a bit confusing due to the way the word is pronounced. IPA phonetic transcription is an effective way to explain its spelling. The first syllable "ing" has the same sound as the suffix "-ing" in words like running or singing. The second syllable "red" has the same sound as the word "red". Therefore, the spelling of "ing red" is actually a combination of two separate sounds. Understanding phonetics can help improve spelling accuracy and pronunciation of words.