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

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

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