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

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

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