The engineering team will lay 48 meters long underground drainage pipes, and there are two kinds of pipes in the warehouse, 3 meters long and 5 meters long. Not counting the joints, how many different ways can there be? (List first, then answer.)
工程队要铺设48米长的地下排水管道，仓库中有3米和5米长的两种管子．接头处不算，可以有多少种不同的取法？(先列表，后回答．)
<result>4</result>