My data is a 600 char string of letters and following some very loose rules you slice 7-10 substrings of the string. The string is an RNA sequence and the substrings vary depending on the genus/species/etc. I know loosely how far down the string each might be, but it’s not perfect and it varies. I definitely know in what order they are, so that helps. Right now I have a script that works 90% of the time, but I’d love to make it learn from the data it reads so it can guess the other 10% or be ready for new discoveries. So I’m not sure how flash fill would work in this scenario.