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

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

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