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

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

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