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

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

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