TAP CODE
                          1 | 2 | 3 | 4 | 5
  count the             -------------------
  blinks               1 |a | b |c/k| d | e
                        ------------------- 
  Letters are pairs    2 |f | g | h | i | j
  of blinks. First      -------------------
  row then column.     3 |l | m | n | o | p
  For example:          ------------------- 
    "h"  is 2 blinks   4 |q | r | s | t | u
       then 3 blinks    ------------------- 
                       5 |v | w | x | y | z
                       
    H      E      L      L      O
   2 3    1 5    3 1    3 1    3 4

  ##########################################                                          
  A green flash shows the beginning of the word.            
  Press "n" for the next word.
  Press "a" to toggle seeing the word.