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

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

*GRAMMAR*
tufa -> YELLOW 
 dax -> PINK 
 gazzer -> RED 
 zup -> GREEN 
 x1 lug x2 -> [x1] [x2] 
 u1 wif x1 -> [x1] [x1] [u1] 
 u1 fep u2 -> [u1] [u1] [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 