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

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

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