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

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

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