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1: Active solar heating system 2: Community 3: Soil 4: Bird abatement 5: Range 6: Weed 7: Lead 8: Feeder 9: Electricity 10: Hazard 11: Contamination 12: Change 13: Japan 14: Periplaneta americana 15: Process 16: Atmosphere 17: Fishery 18: Development 19: Function 20: Action (As of 19:03)