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

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

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