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

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

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