Merge/unmerge based on whether specific text is present in a column

This should be simple - I have seen a similar post, but I do not have the skills to pull from their examples to fix my solution despite a full day of code tweaking.

I am trying to write a loop code that will merge cells (in columns B, C, D and E) for that row depending on whether a specific word is present in column A.

For example: If the word "Table" is present in Cell A15, no cells are merged in row 15- and not for the next three rows either (rows 16-18). If the word is not present in the particular row of Column A, then row cells of columns B:E are merged except for when the row follows as above for the word "Table".

I attached a simplified spreadsheet with an example expected outcome. In my real data table, the values of cells in Column A are referencing data in a different sheet, and upated often, so the code needs to be able to update (merge/unmerge) depending on every change.

Thank you greatly,
Susan