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

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

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