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

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

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