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

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

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