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

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

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