*SUPPORT*
IN: tufa wif OUT: PINK PURPLE
IN: tufa blicket wif blicket wif kiki fep OUT: PURPLE GREEN PURPLE PINK
IN: fep dax fep OUT: GREEN GREEN
IN: lug blicket lug kiki wif OUT: BLUE PURPLE BLUE
IN: tufa blicket tufa OUT: PINK PINK
IN: wif blicket lug dax lug dax wif OUT: BLUE PURPLE BLUE PURPLE
IN: fep kiki fep OUT: GREEN GREEN
IN: fep OUT: GREEN
IN: tufa wif blicket wif kiki lug dax wif OUT: PINK PURPLE BLUE PURPLE PURPLE
IN: fep kiki lug dax wif OUT: GREEN BLUE PURPLE
IN: lug dax fep OUT: BLUE GREEN
IN: fep kiki fep dax fep OUT: GREEN GREEN GREEN
IN: lug blicket tufa OUT: PINK BLUE
IN: wif blicket fep fep blicket lug blicket tufa OUT: GREEN PINK BLUE GREEN PURPLE

*QUERY*
IN: wif kiki fep OUT: PURPLE GREEN
IN: wif tufa dax wif OUT: PURPLE PINK PURPLE
IN: tufa OUT: PINK
IN: wif kiki tufa OUT: PURPLE PINK
IN: lug OUT: BLUE
IN: wif blicket lug kiki wif OUT: BLUE PURPLE PURPLE
IN: lug kiki fep OUT: BLUE GREEN
IN: tufa fep OUT: PINK GREEN
IN: lug fep OUT: BLUE GREEN
IN: wif wif OUT: PURPLE PURPLE

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