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

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

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