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1: Bird abatement 2: Alaska 3: Soil 4: Maximum mid-expiratory flow rate 5: Range 6: Community 7: Weed 8: Periplaneta americana 9: Feeder 10: Human 11: Change 12: Fishery 13: Japan 14: Contamination 15: Lead 16: Function 17: Environment 18: Process 19: Electricity 20: Atmosphere (As of 03:47)
