Here are some popular coin pairs with USDC:

1. BTC/USDC (Bitcoin)

2. ETH/USDC (Ethereum)

3. SOL/USDC (Solana)

4. XRP/USDC (Ripple)

5. DOGE/USDC (Dogecoin)

6. LTC/USDC (Litecoin)

7. MATIC/USDC (Polygon)

8. AVAX/USDC (Avalanche)

You can find these pairs on various exchanges like Binance, Coinbase, Kraken, or others.

Would you like to know more about a specific pair or exchange?