*SUPPORT*
IN: tufa wif fep kiki blicket tufa OUT: RED GREEN YELLOW RED
IN: lug dax lug OUT: PINK PINK
IN: kiki dax kiki OUT: YELLOW YELLOW
IN: lug OUT: PINK
IN: lug dax tufa OUT: RED PINK
IN: tufa wif lug fep tufa OUT: RED GREEN PINK RED
IN: kiki OUT: YELLOW
IN: wif dax wif OUT: GREEN GREEN
IN: kiki fep kiki OUT: YELLOW YELLOW
IN: tufa fep lug OUT: RED PINK
IN: kiki dax tufa OUT: RED YELLOW
IN: tufa fep wif blicket kiki OUT: RED GREEN YELLOW
IN: wif lug lug OUT: GREEN PINK PINK
IN: tufa fep wif OUT: RED GREEN

*QUERY*
IN: wif wif OUT: GREEN GREEN
IN: tufa tufa tufa fep wif blicket wif OUT: RED RED RED GREEN GREEN
IN: kiki fep wif OUT: YELLOW GREEN
IN: lug dax wif OUT: GREEN PINK
IN: tufa blicket wif OUT: RED GREEN
IN: tufa OUT: RED
IN: lug dax kiki blicket kiki blicket lug OUT: YELLOW PINK YELLOW PINK
IN: wif wif fep wif OUT: GREEN GREEN GREEN
IN: wif fep tufa OUT: GREEN RED
IN: kiki tufa dax kiki OUT: YELLOW YELLOW RED

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