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

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

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