If all drums are lying flat and one drum has an oval label that is facing directly forward.
return drums ;return #1 that are lying flat ;return number of  #1 ;return number of  #2 ;return if  #4 is equal to  #3 ;return label ;return #6 that is an oval ;return #7 that is facing directly forward ;return #1 that have #8 ;return number of  #9 ;return if  #10 is equal to  one ;return if  both  #5 and #11 are true
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