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 _    _      ___       _____     ___              
| || | ||   / _ \\    / ___//   / _ \\      ___   
| || | ||  | / \ ||   \___ \\  / //\ \\    /   || 
| \\_/ ||  | \_/ ||   /    // |  ___  ||  | [] || 
 \____//    \___//   /____//  |_||  |_||   \__ || 
  `---`     `---`   `-----`   `-`   `-`     -|_|| 
                                             `-`

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Text this: Graphs with three eigenvalues and second largest eigenvalue at most 1