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

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

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