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

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

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