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1: Active solar heating system 2: Bird abatement 3: Community 4: Soil 5: Weed 6: Range 7: Periplaneta americana 8: Japan 9: Feeder 10: Lead 11: Contamination 12: Process 13: Change 14: Electricity 15: Maximum mid-expiratory flow rate 16: Action 17: Development 18: Function 19: Atmosphere 20: Fishery (As of 11:09)