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

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

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