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

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

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