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

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

*GRAMMAR*
kiki -> PINK 
 zup -> GREEN 
 lug -> BLUE 
 dax -> RED 
 u1 wif u2 -> [u1] [u2] 
 x1 fep -> [x1] [x1] 
 x1 tufa x2 -> [x2] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 