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

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

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