Letter combinations

It's useful to order the letters on your rack, putting the most common combinations together. The 50 most common letter combinations are:

Percentage	Combo
21.0% ES
18.4% IN
17.8% ER
13.0% TI
10.9% TE
10.8% AT
10.7% IS
10.7% ON
10.6% RE
10.5% NG
9.5% ED
9.4% EN
9.3% ST
9.1% ING
9.1% RI
8.9% AL
8.8% LI
8.7% AN
8.6% RA
8.6% LE
8.1% NE
7.9% SE
7.7% AR
7.3% IC
7.1% OR
6.9% RO
6.7% NT
6.1% IT
6.0% IE
5.9% LA
5.8% CO
5.8% DE
5.6% SS
5.5% IO
5.3% RS
5.3% NS
5.2% NI
5.2% CA
5.1% AS
5.0% TA
5.0% HE
4.9% DI
4.9% TR
4.9% TO
4.9% ME
4.8% CH
4.7% UN
4.7% LO
4.6% EL
4.6% OL

Note, this differs quite a bit from what is listed on http://www2.scrabble-assoc.com/Images/Images/10ways11.pdf .

Want to improve your Scrabble, Words with Friends or Letterpress abilities? Get the app:

bin/find_groups.rb | sort | uniq -c | sort -rn | head -50 | awk ' { printf "%2.1f%%", ($1 / 272293) * 100; print " " $2} '| sed -E 's/$/\
|-/'