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

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

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