Ambiguity string->string string string-string 0 1 23456789 string string I string X string string string string string 2 9 string + string 9 5 5 2 Figure 2.6:Two parse trees for 9-5+2 CS308 Compiler Theory 12Ambiguity string -> string + string | string - string | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 CS308 Compiler Theory 12