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

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

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