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

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

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