*SUPPORT*
IN: tufa wif lug wif dax fep OUT: RED BLUE RED GREEN RED BLUE RED
IN: tufa lug fep OUT: GREEN BLUE
IN: wif dax tufa OUT: RED BLUE RED
IN: fep fep lug wif OUT: RED GREEN GREEN
IN: wif zup fep OUT: RED GREEN
IN: fep lug tufa OUT: BLUE GREEN
IN: tufa zup wif zup fep dax tufa OUT: BLUE RED GREEN BLUE GREEN
IN: fep zup tufa wif OUT: GREEN BLUE RED
IN: fep lug wif dax gazzer OUT: RED GREEN PINK RED GREEN
IN: tufa dax tufa OUT: BLUE BLUE BLUE
IN: tufa tufa OUT: BLUE BLUE
IN: tufa tufa zup tufa dax tufa OUT: BLUE BLUE BLUE BLUE BLUE BLUE BLUE
IN: gazzer fep fep OUT: PINK GREEN GREEN
IN: tufa zup gazzer lug fep OUT: BLUE GREEN PINK

*QUERY*
IN: fep OUT: GREEN
IN: wif OUT: RED
IN: fep gazzer OUT: GREEN PINK
IN: wif zup fep lug wif dax tufa OUT: RED RED GREEN BLUE RED GREEN
IN: gazzer zup wif OUT: PINK RED
IN: gazzer fep OUT: PINK GREEN
IN: fep zup gazzer dax gazzer lug fep OUT: GREEN GREEN PINK PINK PINK
IN: gazzer zup wif zup gazzer lug wif OUT: PINK RED RED PINK
IN: gazzer OUT: PINK
IN: gazzer fep gazzer zup wif OUT: PINK GREEN PINK RED

*GRAMMAR*
wif -> RED 
 fep -> GREEN 
 gazzer -> PINK 
 tufa -> BLUE 
 u1 zup x1 -> [u1] [x1] 
 x1 lug u1 -> [u1] [x1] 
 x1 dax u1 -> [x1] [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 