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

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

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