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1: Active solar heating system 2: Community 3: Soil 4: Bird abatement 5: Weed 6: Range 7: Feeder 8: Lead 9: Japan 10: Periplaneta americana 11: Contamination 12: Electricity 13: Change 14: Process 15: Hazard 16: Function 17: Atmosphere 18: Fishery 19: Action 20: Development (As of 23:36)