In this formula, the following arguments are used:
source-string: Suppliers::B2, the cell containing the data you want to search. In this case, you want to search the list in this cell.
regular-expression-string: "\w+", a regular expression that searches for a word.
match-occurrence: ROW(A2)-1. In this case, there are 3 matches for every REGEX.EXTRACT, and you can use another function like REGEX