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

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

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