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

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

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