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

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

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