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

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

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