Nationwide use a system of Multiple questions, any one of which could appear when you try to logon...
http://www.nationwide.co.uk takes us to the main page - It adds on 'default.htm' for you.
There's a tiny 'Sign On' option at the top,
Right-clicking on it and Selecting 'Copy Shortcut' gives us this link...
http://www.nationwide.co.uk/signon/default.htm?source=nationwide&campaign=signonmenulink
So we'll have that as our Access string...
When I registered to use the site I had to choose a User Name and six Q/A pairs.
We've also made this a Top-Pick by putting the Tick in the '+ [ ]' box so it will be put near the top of any search results.
There's a tick in the PW [ ] box, which in this example is called 'Mem Data'
The PW [ ] box is ticked, so in this case the 'Mem Data' will be ready in the Paste buffer when the site is 'Accessed'.
There's also one Chr X string.
Finally, The User Name ans Password buttons have been renamed to 'Cust Num' and 'Mem Data' which matches the site.
Here's the Find Tab for that entry.
We've used the [Access] button, so the 'Mem Data' is ready in the Paste buffer and the text is Bold to show this...
And here's the login page,

The customer number is already in there as the '[ ] Please remember my Customer Number' was ticked the last time we visited the site.
The Passnumber is stored in our Chr X String. And clicking the [4] button will bring up the 4th digit (an 8 - shown below) that is then selected as our first Passnumber. Then we get the 1st and 6th digits in the same way.

The Questions and Answers on this site don't always come up. But if they did, then we'd be ready for them.
You may think that it would be easy to remember such personal answers, but the text has to be exact.
And in my experience it's very easy to get it slightly wrong. So the Answer strings are very useful to have.