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

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

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