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

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

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