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

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

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