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

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

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