This visualization searches for cross-linguistic “minimal pairs” between English and Spanish by identifying English words with intervocalic /t/ or /d/ (flapped as [ɾ]) that, when the consonant is replaced with “r,” form a valid Spanish word. It uses the CMU pronouncing dictionary for English phonetic transcriptions and a Spanish wordlist, applying a regular expression pattern to locate the flappable consonants. The code defines functions like `process_cmu_dict()` and `rhoticize()` to parse the dictionary and perform the substitution, then prints matching English words. The example highlights a phonetic mapping strategy without rendering graphics, focusing on textual data processing.