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

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

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