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

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

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