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

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

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