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

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

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