Text this: On automorphism groups of some PCS graphs

   _____     ___      ____     _    _     _____   
  / ___//   / _ \\   |  _ \\  | || | ||  / ____|| 
  \___ \\  / //\ \\  | |_| || | || | || / //---`' 
  /    // |  ___  || | .  //  | \\_/ || \ \\___   
 /____//  |_||  |_|| |_|\_\\   \____//   \_____|| 
`-----`   `-`   `-`  `-` --`    `---`     `----`