The spelling of the word "Krelis" can be explained using IPA phonetic transcription. The "k" sound is represented by the letter "k", the "r" sound is represented by the letter "r" and the "e" sound is represented by the letter "ɛ". The following "l" sound is again represented by the letter "l", and the "i" sound at the end is represented by the letter "i". Thus, the correct spelling of the word "Krelis" based on its IPA transcription is "k-r-ɛ-l-i-s".