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

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

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