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

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

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