21. The means for claim 20 , wherein said top row located in said fourth quadrant includes vowels A, I, O, U, and E, or any combination thereof.
21. The means for claim 20 , wherein said top row located in said fourth quadrant includes vowels A, I, O, U, and E, or any combination thereof. 24. The means for claim 21 , wherein vowels A, E, I, O, and U include at least one distinguishing feature.