*SUPPORT*
IN: dax wif tufa tufa tufa OUT: RED YELLOW YELLOW YELLOW
IN: fep wif dax fep fep OUT: PINK RED PINK PINK
IN: dax kiki wif kiki wif dax lug tufa OUT: RED GREEN GREEN RED YELLOW YELLOW
IN: tufa kiki wif fep lug kiki OUT: YELLOW GREEN PINK GREEN GREEN
IN: dax blicket kiki OUT: RED GREEN
IN: kiki blicket kiki OUT: GREEN GREEN
IN: dax OUT: RED
IN: tufa wif kiki blicket tufa OUT: YELLOW GREEN YELLOW
IN: dax tufa wif fep OUT: RED YELLOW PINK
IN: kiki lug fep OUT: GREEN PINK PINK
IN: fep blicket tufa OUT: PINK YELLOW
IN: kiki wif tufa OUT: GREEN YELLOW
IN: kiki dax lug fep OUT: GREEN RED PINK PINK
IN: dax kiki wif tufa blicket tufa OUT: RED GREEN YELLOW YELLOW

*QUERY*
IN: tufa blicket dax OUT: YELLOW RED
IN: fep lug fep OUT: PINK PINK PINK
IN: fep lug kiki OUT: PINK GREEN GREEN
IN: kiki lug dax OUT: GREEN RED RED
IN: tufa lug fep OUT: YELLOW PINK PINK
IN: fep blicket dax OUT: PINK RED
IN: tufa wif fep OUT: YELLOW PINK
IN: kiki lug tufa OUT: GREEN YELLOW YELLOW
IN: tufa OUT: YELLOW
IN: kiki dax wif dax OUT: GREEN RED RED

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