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

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

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