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

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

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