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

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

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