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

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

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