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

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

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