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

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

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