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

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

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