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

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

*GRAMMAR*
dax -> BLUE 
 wif -> PINK 
 fep -> GREEN 
 lug -> RED 
 x1 tufa x2 -> [x2] [x1] 
 x1 blicket u1 -> [u1] [x1] 
 x1 gazzer -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 