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

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

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