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

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

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