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

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

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