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

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

*GRAMMAR*
tufa -> RED 
 dax -> GREEN 
 fep -> PINK 
 kiki -> YELLOW 
 x1 lug x2 -> [x1] [x2] 
 u1 wif x1 -> [u1] [x1] 
 u1 gazzer x1 -> [u1] [x1] [x1] [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 