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

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

*GRAMMAR*
zup -> RED 
 kiki -> GREEN 
 wif -> BLUE 
 fep -> PURPLE 
 x1 lug x2 -> [x2] [x2] [x1] [x2] [x2] 
 u1 tufa u2 -> [u1] [u2] 
 x1 dax x2 -> [x1] [x1] [x1] [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 