I'm trying to figure out how to loop through a csv file with an inconsistent number of columns, then pair the data from column[0] to column[1], column[0] to column[2] and so on.

CSV example:

```
ID, Value1, Value2, Value3, Value4
1, alfred, enrique, mark
2, robert, james
3, mike, jack, todd, buddy

```

Expected output written to .txt file:

```
1 + alfred
1 + enrique
1 + mark
2 + robert 
2 + james
3 + mike
3 + jack
3 + todd
3 + buddy

```

The first solution that comes to mind is to fill all of the Values that don't have any text with "abc" in excel and then when I'm doing the addition for the expected output, remove any rows with "abc" in them before writing to the .txt file, but I don't think that's the best approach...