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

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

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