*SUPPORT*
IN: gazzer tufa lug wif tufa fep zup OUT: YELLOW YELLOW RED RED RED RED PURPLE
IN: gazzer tufa OUT: YELLOW YELLOW
IN: dax tufa OUT: BLUE BLUE
IN: wif OUT: RED
IN: zup OUT: PURPLE
IN: wif fep gazzer OUT: RED YELLOW
IN: wif tufa lug dax tufa OUT: RED RED BLUE BLUE BLUE BLUE
IN: wif wif gazzer dax tufa OUT: RED RED YELLOW BLUE BLUE
IN: zup tufa fep zup OUT: PURPLE PURPLE PURPLE
IN: wif wif tufa OUT: RED RED RED
IN: gazzer wif OUT: YELLOW RED
IN: wif gazzer OUT: RED YELLOW
IN: zup lug wif tufa OUT: PURPLE RED RED RED RED
IN: gazzer tufa fep wif tufa OUT: YELLOW YELLOW RED RED

*QUERY*
IN: dax lug dax OUT: BLUE BLUE BLUE
IN: wif tufa OUT: RED RED
IN: gazzer OUT: YELLOW
IN: dax tufa lug gazzer tufa OUT: BLUE BLUE YELLOW YELLOW YELLOW YELLOW
IN: gazzer gazzer OUT: YELLOW YELLOW
IN: dax wif lug dax wif tufa OUT: BLUE RED BLUE RED RED BLUE RED RED
IN: wif wif fep dax gazzer OUT: RED RED BLUE YELLOW
IN: zup tufa OUT: PURPLE PURPLE
IN: dax OUT: BLUE
IN: dax gazzer tufa OUT: BLUE YELLOW YELLOW

*GRAMMAR*
gazzer -> YELLOW 
 zup -> PURPLE 
 wif -> RED 
 dax -> BLUE 
 x1 fep x2 -> [x1] [x2] 
 u1 tufa -> [u1] [u1] 
 x1 lug x2 -> [x1] [x2] [x2] 
 u1 x1 -> [u1] [x1] 
 