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

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

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