Data sorting

Is there any easy way to do a data sort on a file that has multiple "row" entries per item?

aaa a b c
4 5 6
er we as
bbb a c b
6 5 3
er qw as
ccc b c e
7 4 2
fg er rt

In this eample, I want to do an aphabetical sort on aaa, bbb, ccc and have the three rows of data for those variables to stay with the variables