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

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

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