Did you know Android versions name are in alphabetical order.
and all name is based on food.
So if you use animal peg , food peg
So you can use Android version as a food peg
And it has two advantages
First you learn all Android versions
Second it helps in food peg
C - Cupcake
D - Donut
E - Eclair
F - Froyo
G - Gingerbread
H - Honeycomb
I - Ice cream
J - Jellybean
K - KitKat
L - Lollipop
M - Marshmallow
N - Nougat
O - Oreo
P - Pie
That is great to have but. 99 percent of the letters in alphabet are small ones. It would be much more usefull to have shaper system for -small- letters. It would be perfect to have shaper PAO for each letter. Maybe this could be usefull to memorize some new words.