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

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

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