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

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

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