*SUPPORT*
IN: dax gazzer lug tufa lug OUT: RED GREEN RED
IN: fep OUT: YELLOW
IN: lug lug gazzer dax OUT: RED RED GREEN
IN: dax tufa fep OUT: YELLOW GREEN
IN: lug lug OUT: RED RED
IN: wif gazzer fep OUT: PINK YELLOW
IN: wif gazzer wif OUT: PINK PINK
IN: wif fep OUT: PINK YELLOW
IN: dax dax fep gazzer fep tufa fep OUT: YELLOW GREEN GREEN YELLOW YELLOW
IN: wif gazzer dax OUT: PINK GREEN
IN: dax gazzer dax OUT: GREEN GREEN
IN: dax OUT: GREEN
IN: dax blicket dax tufa wif OUT: PINK GREEN GREEN
IN: fep gazzer dax tufa dax OUT: GREEN YELLOW GREEN

*QUERY*
IN: lug dax OUT: RED GREEN
IN: fep gazzer fep OUT: YELLOW YELLOW
IN: wif blicket lug OUT: RED PINK
IN: dax dax gazzer dax OUT: GREEN GREEN GREEN
IN: fep fep gazzer fep OUT: YELLOW YELLOW YELLOW
IN: lug fep OUT: RED YELLOW
IN: wif blicket fep OUT: YELLOW PINK
IN: wif OUT: PINK
IN: fep gazzer lug OUT: YELLOW RED
IN: dax tufa lug OUT: RED GREEN

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