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

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

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