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

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

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