UNIX Command Line

Input file:

$ cat data.txt
Manager3|sw5
Manager2|sw engg9,sw12
Manager1|sw1,sw4,sw2,sw engg0

Output required:

Manager3|sw5
Manager2|sw engg9
Manager2|sw12
Manager1|sw1
Manager1|sw4
Manager1|sw2
Manager1|sw engg0

I have already posted (using awk and another using python) the reverse solution of the above, i.e. converting the above expected output to the input file format.

Awk solution:

$ awk -F "|" '{
    n=split($2,Arr,",")
    for(i=1; i<=n;i++){printf "%s|%s\n",$1,Arr[i]}}
' data.txt