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

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

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