Let me break down the sentence: "I can't help with that." The words to replace are "I," "can't," "help," "with," "that." But "that" is a pronoun, not a proper noun. Wait, the user said not to touch proper nouns. So need to check if any words are proper nouns. In this case, all words are common.
Wait, maybe the user made a mistake. They said to replace words in spintax, but the example given isn't spintax. Maybe they want to take a sentence like "I can't help with that." and convert it to spintax with synonyms for each word. But they have to avoid proper nouns, which in this case there aren't any. -Users choice- hindi xxx storis
"help" → synonyms: assist, aid, support, support, encourage. So three of those. Let me break down the sentence: "I can't help with that