The spelling of the word "ruybal" is a bit tricky, as it involves a combination of sounds that aren't commonly found in English. The first sound is a rolled "r" (represented in IPA as [r]), followed by a long "u" sound ([u:]), and then a "y" ([j]) sound. Finally, there's an "uh" sound ([ə]), followed by a "b" ([b]) and an "uh-l" ([l]) sound. So, the correct spelling would be "r-u-y-b-a-l" ([rʊjbl̩]) in IPA phonetic transcription.