question: If one pair of pads has visible red tags, and the other pair does not.
#1 return pairs of  pads 
#2 return tags of  #1 
#3 return #1 where #2 are  red 
#4 return #1 besides  #3 
#5 return number of #3 
#6 return number of #4 
#7 return if  #5 is  equal to one 
#8 return if  #6 is  equal to one 
#9 return if  both  #7 and #8 are  true