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

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

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