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

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

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