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

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

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