请将以下句子进行排序: 1.We sincerely hope that this order will be just the first of many during the year. 2.The shipping department is working on this order. 3.We are indeed glad to say “Welcome” and thanks for your order of 6th June, which arrived this morning. 4.We will send it to you within the next two days. 5.It gives us great pleasure to be able to write this letter welcoming you to T&T.