The spelling of the words "wert in pain" might seem confusing at first glance, but it can be explained through the use of IPA phonetic transcription. The word "wert" is pronounced with the IPA symbol /wɜrt/, which represents the sound of the letter "w" followed by a short vowel sound similar to the "er" in "herd." Similarly, "in pain" is pronounced with the IPA symbols /ɪn peɪn/, representing the sounds of the short "i" and the diphthong "ei" in "pain." Overall, the spelling of "wert in pain" accurately reflects its pronunciation in English.