*SUPPORT*
IN: wif lug wif OUT: RED RED RED RED
IN: dax lug wif OUT: RED GREEN GREEN GREEN
IN: dax kiki gazzer fep OUT: GREEN PINK PINK BLUE BLUE
IN: fep lug fep tufa OUT: BLUE BLUE BLUE BLUE BLUE BLUE BLUE BLUE
IN: kiki fep wif lug wif OUT: PINK BLUE RED RED RED RED
IN: dax OUT: GREEN
IN: wif dax OUT: RED GREEN
IN: wif dax lug dax OUT: RED GREEN GREEN GREEN GREEN
IN: kiki fep OUT: PINK BLUE
IN: kiki wif tufa OUT: PINK RED PINK RED
IN: fep kiki wif fep tufa OUT: BLUE PINK RED BLUE BLUE PINK RED BLUE
IN: dax fep lug kiki OUT: GREEN PINK BLUE BLUE BLUE
IN: kiki gazzer fep tufa OUT: PINK PINK BLUE BLUE BLUE BLUE
IN: wif tufa OUT: RED RED

*QUERY*
IN: wif OUT: RED
IN: fep lug wif OUT: RED BLUE BLUE BLUE
IN: wif lug dax OUT: GREEN RED RED RED
IN: wif lug kiki OUT: PINK RED RED RED
IN: fep wif gazzer dax OUT: BLUE RED RED GREEN GREEN
IN: fep OUT: BLUE
IN: dax gazzer fep tufa OUT: GREEN GREEN BLUE BLUE BLUE BLUE
IN: dax lug kiki OUT: PINK GREEN GREEN GREEN
IN: kiki OUT: PINK
IN: fep kiki dax lug wif OUT: BLUE PINK RED GREEN GREEN GREEN

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