The correct spelling for the phrase "patterns up on" is /'pætənz ʌp ɒn/. The first word, "patterns," is spelled with a double 't' and an 's' at the end to indicate the plural of the noun. The second and third words, "up on," are spelled with the letter 'u' and the diphthong 'oʊ' to represent the pronunciation of the words. The use of IPA phonetic transcription helps to provide an accurate representation of the pronunciation of the phrase.