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

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

*GRAMMAR*
wif -> RED 
 lug -> PURPLE 
 fep -> BLUE 
 dax -> YELLOW 
 u1 gazzer -> [u1] [u1] [u1] [u1] [u1] [u1] 
 u1 tufa u2 -> [u1] [u2] 
 u1 zup x1 -> [x1] [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 