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

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

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