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

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

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