*SUPPORT*
IN: fep zup fep lug blicket OUT: BLUE BLUE BLUE GREEN
IN: wif wif gazzer wif lug wif lug wif OUT: PURPLE PURPLE PURPLE PURPLE PURPLE
IN: fep zup tufa lug tufa lug wif OUT: BLUE YELLOW YELLOW YELLOW PURPLE
IN: fep zup blicket lug blicket OUT: BLUE GREEN GREEN GREEN
IN: fep lug fep OUT: BLUE BLUE
IN: tufa OUT: YELLOW
IN: blicket blicket tufa tufa fep lug tufa OUT: GREEN GREEN YELLOW YELLOW BLUE YELLOW
IN: tufa fep gazzer blicket lug blicket OUT: YELLOW BLUE GREEN GREEN
IN: wif tufa zup fep lug wif gazzer blicket OUT: PURPLE YELLOW BLUE BLUE PURPLE GREEN
IN: tufa wif OUT: YELLOW PURPLE
IN: tufa zup blicket gazzer wif OUT: YELLOW GREEN GREEN PURPLE
IN: fep gazzer wif OUT: BLUE PURPLE
IN: wif zup tufa OUT: PURPLE YELLOW YELLOW
IN: blicket tufa zup fep OUT: GREEN YELLOW BLUE BLUE

*QUERY*
IN: fep blicket wif gazzer tufa OUT: BLUE GREEN PURPLE YELLOW
IN: wif zup wif lug tufa OUT: PURPLE PURPLE PURPLE YELLOW
IN: blicket wif lug wif gazzer fep OUT: GREEN PURPLE PURPLE BLUE
IN: wif OUT: PURPLE
IN: fep OUT: BLUE
IN: blicket blicket zup blicket OUT: GREEN GREEN GREEN GREEN
IN: wif zup blicket OUT: PURPLE GREEN GREEN
IN: tufa zup blicket OUT: YELLOW GREEN GREEN
IN: wif tufa tufa gazzer fep gazzer fep OUT: PURPLE YELLOW YELLOW BLUE BLUE
IN: blicket OUT: GREEN

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