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

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

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