Text this: Characterization and Transformation of Countryman Lines and R-Embeddable Coherent Trees in ZFC

 ______    _    _    _    _     ______   ______   
|      \\ | || | || | || | ||  /_   _// |      \\ 
|  --  // | || | || | || | ||   -| ||-  |  --  // 
|  --  \\ | \\_/ || | \\_/ ||   _| ||_  |  --  \\ 
|______//  \____//   \____//   /_____// |______// 
`------`    `---`     `---`    `-----`  `------`