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

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

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