# State the rule!

State the rule behind the following partition of letters, and fill in the questionmarks. (The puzzle has a clear and justifiable trivia-type solution.)

      A . . D E . G H I . K . . N O . . . S T . . . ? ? ?
---------------------------------------------------------
. B C . . F . . . J . L M . . P Q R . . U V W ? ? ?

• Is the fact that the I is written with three strokes significant for the solution? – The Dark Truth Nov 23 '15 at 13:56
• No, the shape of the letters is not significant for the solution. – Alexis Nov 23 '15 at 13:58
• Capital versus lowercase is not significant. It is a trivia-type puzzle. – Alexis Nov 23 '15 at 14:23
• I was going to guess that they are divided in half according to the most and least used letters in English language, but I checked and it doesn't match. – cinico Nov 23 '15 at 16:46
• I've been trying to tie it to US states abbreviations, counts, capitals.. something - considering the title is "state the rule" – Raystafarian Nov 23 '15 at 17:15

The rule appears to be:

The last letters of the names of U.S. states.

A
Alabama
Arizona
California
Florida
Georgia
Indiana
Iowa
Louisiana
Minnesota
Montana
North Carolina
North Dakota
Oklahoma
Pennsylvania
South Carolina
South Dakota
Virginia
West Virginia

D
Maryland
Rhode Island

E
Delaware
Maine
New Hampshire
Tennessee

G
Wyoming

H
Utah

I
Hawaii
Mississippi
Missouri

K
New York

N
Michigan
Oregon
Washington
Wisconsin

O
Colorao
Idaho
New Mexico
Ohio

S
Arkansas
Illinois
Kansas
Massachusetts
Texas

T
Connecticut
Vermont

So of the last three letters,

Y (Kentucky, New Jersey) is on the top row, X and Z on the bottom.