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

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

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