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

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

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