请将下列句子进行排序: 1.The goods are urgently required, so prompt delivery will be most appreciated. 2. We thank you very much for your letter of February 15 with patterns and price lists. 3. We have chosen three qualities (456, 890 and 134) for which we enclose Order No. 777. 4. You will soon hear from your bank. 5. We have instructed our bank to open a letter of credit (L/C) for the amount of this order.