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

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

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