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

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

*GRAMMAR*
fep -> GREEN 
 lug -> YELLOW 
 blicket -> PURPLE 
 dax -> RED 
 u1 wif u2 -> [u2] [u1] [u1] 
 u1 zup x1 -> [x1] [u1] 
 u1 gazzer u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 