Best emojis for efficient⚡⚙️♻️

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high voltage
lightning bolt, thunder, electric, electricity, danger, zap, flash, blitz, blazingly fast, speed, power, powerful, energy, shock, charge, recharge, utility, performance, generator, quick, quickstart, efficient, efficiency, jolt, express
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gear
settings icon, cog, cogwheel, tool, mechanical, engineering, hardware, control, machine, service, system, custom, customization, preference, configuration, process, operate, operation, execution, function, mechanism, efficient, efficiency, effective, technical, part, model, administration, method
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recycling symbol
recycle, sustainable, reuse, garbage, trash, refactor, cycle, iteration, flow, workflow, process, operate, operation, execution, efficient, efficiency