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

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

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