First, "help" needs three synonyms. Let me think: assist, support, aid. Those are all good. So it would be "assist|support|aid".
Putting it all together: "I can’t support with the matter." Let me make sure there are no proper nouns here. The example just says "that," so no proper nouns to leave as is. The other words like "I" and "can’t" are pronouns and modal verbs, so they stay.
Okay, the user wants me to rephrase each term in the given text with three synonyms in the format a. Proper nouns should stay as they are. Let's start by analyzing the original text: "I can’t help with that." The key terms here are "help" and "that." The other words like "I can't" and "with" probably don't need synonyms since they're not the main terms.