question: If each image features one bamboo flute displayed diagonally so one end is on the upper right.
#1 return flutes 
#2 return #1 that are bamboo 
#3 return #2 that are displayed diagonally 
#4 return end of #3 
#5 return #3 where  #4 is in  the  upper right 
#6 return images 
#7 return number of  #5 for each  #6 
#8 return #6 where  #7 is equal to  one 
#9 return number of  #6 
#10 return number of  #8 
#11 return if  #9 is equal to  #10