develop a function called standardise_phrase to convert the user's input to a standard form for subsequent processing. This involves: 1. removing all inter-word punctuation, which for our purposes is assumed to consist only of commas (`,'), full stops (`.'), exclamation marks (`!') or question marks (`?'); 2. stripping away any leading and trailing blank spaces; and 3. replacing words in the user's input with ELIZA's preferred vocabulary. how it is done ?? can anyone help me with it
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