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

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

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