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

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

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