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

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

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