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

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

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