Create A Single Report From Multiple Forms On Separate Pages

I have made a site with 5 pages, each page contains a form. Each form is a checklist with a dropdown to choose an answer for each individual item.

Here is a same of the form code:

I am trying to write a script that will be called with onclick event from the "Next" button. This script will collect all the "notOK" option value/names and send them to a document, concatenating the info from the next forms until a single report is created with a list of all the "notOK" values. One the user gets to the end of the last form, there will be a submit button which sends the entire report to a specific email address.

Here is the script I have so far, which pulls the "notOK" values for each page:

This piece of code works great for an individual page, but I need to expand it to send the data to a report instead of window.alert, and I need to add some way of concatenating the data from each form to a single page, doc, etc.