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

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

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