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

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

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