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

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

*GRAMMAR*
wif -> YELLOW 
 gazzer -> BLUE 
 dax -> PURPLE 
 zup -> GREEN 
 x1 lug x2 -> [x2] [x1] 
 u1 tufa -> [u1] [u1] 
 x1 kiki u1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 