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

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

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