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  _____     _____    ______     _____     ______  
 |__  //   |  ___|| |      \\  |  ___||  /_   _// 
   / //    | ||__   |  --  //  | ||__    `-| |,-  
  / //__   | ||__   |  --  \\  | ||__      | ||   
 /_____||  |_____|| |______//  |_____||    |_||   
 `-----`   `-----`  `------`   `-----`     `-`'

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Text this: Design of a class-EF inverter