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

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

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