*SUPPORT*
IN: fep wif lug OUT: PURPLE PINK
IN: lug wif kiki blicket lug kiki zup dax OUT: PURPLE GREEN RED RED PURPLE
IN: kiki wif kiki OUT: RED RED
IN: fep zup fep OUT: PINK PINK
IN: kiki zup lug OUT: PURPLE RED
IN: lug OUT: PURPLE
IN: fep wif dax OUT: GREEN PINK
IN: dax OUT: GREEN
IN: kiki OUT: RED
IN: dax lug zup dax blicket fep wif fep OUT: PINK PINK GREEN GREEN PURPLE
IN: fep zup dax OUT: GREEN PINK
IN: dax wif kiki OUT: RED GREEN
IN: fep wif kiki OUT: RED PINK
IN: lug zup dax OUT: GREEN PURPLE

*QUERY*
IN: fep dax OUT: PINK GREEN
IN: fep OUT: PINK
IN: lug wif fep OUT: PINK PURPLE
IN: kiki lug blicket dax OUT: GREEN RED PURPLE
IN: kiki wif dax OUT: GREEN RED
IN: kiki wif fep OUT: PINK RED
IN: lug kiki zup fep blicket lug OUT: PURPLE PURPLE PINK RED
IN: dax zup kiki OUT: RED GREEN
IN: dax blicket dax fep zup fep OUT: GREEN PINK PINK GREEN
IN: dax wif fep OUT: PINK GREEN

*GRAMMAR*
dax -> GREEN 
 kiki -> RED 
 fep -> PINK 
 lug -> PURPLE 
 u1 wif u2 -> [u2] [u1] 
 x1 blicket x2 -> [x2] [x1] 
 u1 zup u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 