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

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

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