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

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

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