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

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

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