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

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

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