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

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

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