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

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

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