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

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

*GRAMMAR*
tufa -> BLUE 
 zup -> GREEN 
 fep -> RED 
 wif -> PURPLE 
 u1 dax u2 -> [u1] [u2] [u2] 
 x1 lug x2 -> [x1] [x2] [x2] [x1] [x1] 
 x1 blicket -> [x1] [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 