*SUPPORT*
IN: zup fep wif OUT: BLUE GREEN
IN: lug fep dax OUT: PINK PURPLE
IN: dax wif tufa dax OUT: PINK PINK PINK BLUE
IN: wif fep dax OUT: PINK BLUE
IN: zup kiki OUT: GREEN GREEN
IN: lug fep zup OUT: GREEN PURPLE
IN: zup wif OUT: GREEN BLUE
IN: wif fep lug OUT: PURPLE BLUE
IN: wif tufa lug OUT: PURPLE PURPLE BLUE
IN: zup fep dax OUT: PINK GREEN
IN: dax kiki OUT: PINK PINK
IN: zup zup OUT: GREEN GREEN
IN: lug OUT: PURPLE
IN: zup dax dax kiki OUT: GREEN PINK PINK PINK

*QUERY*
IN: zup OUT: GREEN
IN: dax fep zup OUT: GREEN PINK
IN: dax tufa wif OUT: BLUE BLUE PINK
IN: lug tufa wif OUT: BLUE BLUE PURPLE
IN: wif OUT: BLUE
IN: zup tufa lug OUT: PURPLE PURPLE GREEN
IN: dax fep dax OUT: PINK PINK
IN: zup lug wif wif kiki OUT: GREEN PURPLE BLUE BLUE BLUE
IN: zup fep zup OUT: GREEN GREEN
IN: lug tufa zup OUT: GREEN GREEN PURPLE

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