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

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

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