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

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

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