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

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

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