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

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

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