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

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

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