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

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

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