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

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

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