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

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

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