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

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

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