FINGERs


  left index finger pointing up right index finger pointing up  
right index finger pointing left How many
fingers?
left index finger pointing right
left index finger pointing left right index finger pointing right
  left index finger pointing down right index finger pointing down  

  left index finger pointing up right index finger pointing up  
right index finger pointing left Four directions
x 2 pieces of type
left index finger pointing right
left index finger pointing left right index finger pointing right
  left index finger pointing down right index finger pointing down  

Distinguish different characters by direction of pointing, not whether it is the left or right hand doing the pointing