If the drum kit on the left has violet color around each drum, and the kit on the right has red around each drum.
return drum  kit  ;return #1 on the  left ;return #1 on the  right ;return drums of #2 ;return drums of #3 ;return color around #4 ;return color around #5 ;return #4 where  #6 is violet ;return #5 where  #7 is red ;return number of  #4 ;return number of  #5 ;return number of  #8 ;return number of  #9 ;return if  #12 is equal to  #10 ;return if  #13 is equal to  #11 ;return if  both  #14 and #15 are true
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