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

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

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