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

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

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