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

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

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