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

*QUERY*
IN: wif fep OUT: PURPLE GREEN
IN: tufa OUT: RED
IN: tufa wif OUT: RED PURPLE
IN: fep wif OUT: GREEN PURPLE
IN: fep dax gazzer wif OUT: YELLOW PURPLE GREEN
IN: gazzer blicket gazzer OUT: YELLOW YELLOW YELLOW
IN: wif blicket gazzer OUT: PURPLE YELLOW PURPLE
IN: fep OUT: GREEN
IN: fep dax gazzer OUT: YELLOW GREEN
IN: tufa tufa gazzer OUT: RED RED YELLOW

*GRAMMAR*
wif -> PURPLE 
 tufa -> RED 
 gazzer -> YELLOW 
 fep -> GREEN 
 u1 blicket x1 -> [u1] [x1] [u1] 
 x1 dax x2 -> [x2] [x1] 
 x1 lug u1 -> [u1] [x1] 
 u1 x1 -> [u1] [x1] 
 