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

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

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