Variables

I need to prevent an end user from going to the next screen until they click on all of the text boxes. I have created a variable that gets modified when the text box is clicked. There are 5 text boxes(a,b,c,d,e). If they click all 5, the next button appears.

However, if they click them out of order, the next button does not appear. I have added conditions when I had 3 or 4, by putting the letters in a random order. There were 6 for the 3 letter combo and 24 for the 4 letter combo. But, there is not enough room in the conditions to add the 124 conditions that I need to do this.

Is there a condition parameter that will accept the letters in any order? Something like a special symbol between each letter maybe?

Steve