If you don't want to manually fix a lot of things, I think you will at minimum need some formulas. Below is one possible option:
Create delimiters with new formula column
Concat Items(Words(:Letter Sequence, ""), " ")
Then use text to columns with the new delimiter character
![jthi_0-1666709951206.png jthi_0-1666709951206.png](https://community.jmp.com/t5/image/serverpage/image-id/46551i996B6FB928ACB5F4/image-size/medium?v=v2&px=400)
Stack the data table with the new columns
![jthi_1-1666709995611.png jthi_1-1666709995611.png](https://community.jmp.com/t5/image/serverpage/image-id/46552i1A6DAA5A0975DDBA/image-size/medium?v=v2&px=400)
Create new formula column to get the correct Start Letter numbers
Col Min(:Start Letter No., :Letter Sequence) + Col Cumulative Sum(1, :Letter Sequence)
Copy that just created column to other column to get End Letter No (or use formula)
Then you need one more formula, to change first letter's Delta D to 0
If(Row() == Col Min(Row(), :Letter Sequence),
0,
:Delta D
)
Finally cleanup column names to match what you want
![jthi_2-1666710269331.png jthi_2-1666710269331.png](https://community.jmp.com/t5/image/serverpage/image-id/46553i186FFFBBD1A97185/image-size/medium?v=v2&px=400)
-Jarmo