*SUPPORT*
IN: wif wif dax zup OUT: PURPLE PURPLE YELLOW
IN: zup gazzer OUT: YELLOW YELLOW YELLOW
IN: tufa gazzer OUT: GREEN GREEN GREEN
IN: tufa fep OUT: GREEN GREEN
IN: lug dax tufa OUT: RED GREEN
IN: zup tufa OUT: YELLOW GREEN
IN: zup OUT: YELLOW
IN: wif tufa dax lug OUT: PURPLE GREEN RED
IN: lug OUT: RED
IN: wif gazzer OUT: PURPLE PURPLE PURPLE
IN: tufa dax tufa OUT: GREEN GREEN
IN: tufa OUT: GREEN
IN: zup dax zup OUT: YELLOW YELLOW
IN: tufa tufa wif gazzer OUT: GREEN GREEN PURPLE PURPLE PURPLE

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

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