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

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

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