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1: Active solar heating system 2: Bird abatement 3: Community 4: Soil 5: Weed 6: Range 7: Periplaneta americana 8: Lead 9: Japan 10: Feeder 11: Contamination 12: Process 13: Change 14: Electricity 15: Maximum mid-expiratory flow rate 16: Development 17: Fishery 18: Action 19: Function 20: Atmosphere (As of 04:04)