QIOU-PHEA-BJKG layout

Step 1: Optimize arrangement of the 12 most frequent letters across left and right sides
Step 2: Arrange the most common command shortcut characters on the right side
Step 3: Optimize arrangement of all remaining letters
Step 4: Add punctuation marks and characters above similar-looking numbers

The Engram layout is an optimal keyboard layout for touch typing in English created by Arno Klein, with open source code.

           Q  I  O  U        D  N  L  Y  Z  
           P  H  E  A        T  S  R  C  X 
           B  J  K  G        M  F  W  V

The Shift key accesses characters (top) that look similar to the numbers:

           !  =  ?  +  $  @  ^  &  %  *
           1  2  3  4  5  6  7  8  9  0

and accesses related but less common punctuation (top):

        `    \    ;    :    {    }    |    _
        '    "    ,    .    (    )    /    -