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

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

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