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

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

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