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

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

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