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

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

*GRAMMAR*
wif -> BLUE 
 tufa -> YELLOW 
 dax -> PURPLE 
 fep -> GREEN 
 u1 lug x1 -> [u1] [x1] [u1] [u1] 
 x1 gazzer x2 -> [x1] [x2] 
 u1 zup u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 