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

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

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