2.5. Sketch the tree that represents the PF code 5100, $2010, 83100, 54111, and label each leaf with the corresponding symbol. Is it possible to extend this code without destroying the PF property? 2.6. Denote the ternary alphabet by T = {0,1,2). Construct a tree rep- resenting the ternary code with codewords 02, 101, 120, 221, 222. Is it possible to extend this code without destroying the PF property?