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

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

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