A—contract of employmentB—contract of arbitrationC—contract for goodsD—contract for purchaseE—contract for serviceF—contract for future deliveryG—contract partiesH—contractual practice/usageI—contractual claimJ—contractual liability/obligationK—expiration of contractL—renewal of contractM—to terminate the contractN—to alter the contractO—to draw up a contractP—originals of the contractQ—copies of the contract （）合同正本（）解除合同