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

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

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