If there is a black drum set with at least three cymbal and a mixing dock attach to the bar on the left side of the set.
return black drum set ;return cymbals of #1 ;return number of  #2 ;return if  #3 is at least three ;return left side of #1 ;return bar on #5 ;return mixing dock ;return if  #7 attaches to  #6 ;return if  both  #4 and #8
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