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

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

*GRAMMAR*
wif -> YELLOW 
 lug -> PURPLE 
 tufa -> GREEN 
 blicket -> BLUE 
 u1 fep u2 -> [u1] [u2] 
 x1 zup -> [x1] [x1] 
 x1 dax x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 