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

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

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