Text this: The Set Chromatic Numbers of the Middle Graph of Tree Families

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