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

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

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