The main ways of loan restructuring are (1) changing the guarantee conditions; (2) Adjust the repayment period; (3) adjusting interest rates; (4) the change of the borrowing enterprise (merger, division, shareholding system reform, etc.). ); (5) Loan interest relief (meeting the following conditions: the credit rating of the borrowing enterprise is below BBB level (including BBB level), and the loan principal is secondary, doubtful or loss). Therefore, ABCDE meets the meaning of the problem.