[HELP] How do I create a list (Data Validation) and add to the list without cell reference

The data validation is a list, with this validation rule: "=$G$3:$I$3".

How do I add "Seven" into it without using an extra cell at all?

I was thinking of doing "=OR($G$3:$I$3, "SEVEN")" but that didn't work.

And, another question, how do I add the "FOUR" if it is far away from the $G$3:$I$3 cells?

Thanks! I've attached a sample so it is easier to understand.