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

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

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