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

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

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