Terms of delivery of documents are as follows: (1)Delivery of documents against ______, its abbreviation is ______. (2)Delivery of documents against ______, its abbreviation is ______. (3)Delivery of documents against payment of a ______. (4)Delivery of documents against part of collection to be ______ and the balance by way of the ______ of a separate draft payable at a future date. (5)Delivery of documents against ______. (6)Delivery of documents against ______ to pay. (7)Delivery of documents against a ______. (8)Delivery of documents against letter of guarantee from the buyers or their bank guaranteeing that payment must be made at a ______.