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

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

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