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

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

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