The spelling of the word "ininto step" can be explained using the International Phonetic Alphabet (IPA) as [ɪnɪntu: stɛp]. The first part, "ininto," is pronounced with an initial short "i" sound followed by a nasalized "n" sound, then a short "i" sound again and ending with a long "u" sound. The second part, "step," is pronounced with a long "e" sound and a short "p" sound. This word, though uncommon in English, can be pronounced correctly with the help of IPA.