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

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

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