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

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

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