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

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

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