*SUPPORT*
IN: kiki fep tufa OUT: PURPLE GREEN PURPLE GREEN
IN: kiki wif fep wif OUT: GREEN PINK PINK PINK PINK
IN: zup fep tufa OUT: PURPLE RED PURPLE RED
IN: wif zup zup gazzer tufa lug OUT: PURPLE PURPLE PURPLE PURPLE PINK RED RED
IN: zup lug OUT: RED RED
IN: wif wif OUT: PINK PINK
IN: zup fep zup OUT: RED RED RED RED
IN: zup OUT: RED
IN: tufa fep kiki OUT: GREEN PURPLE GREEN PURPLE
IN: zup gazzer kiki OUT: GREEN GREEN RED
IN: wif fep tufa OUT: PURPLE PINK PURPLE PINK
IN: kiki fep zup lug OUT: RED GREEN RED GREEN RED GREEN RED GREEN
IN: tufa fep tufa OUT: PURPLE PURPLE PURPLE PURPLE
IN: wif fep wif OUT: PINK PINK PINK PINK

*QUERY*
IN: kiki tufa OUT: GREEN PURPLE
IN: tufa fep tufa lug OUT: PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE PURPLE
IN: wif fep kiki OUT: GREEN PINK GREEN PINK
IN: tufa OUT: PURPLE
IN: wif fep zup OUT: RED PINK RED PINK
IN: wif kiki fep tufa OUT: PINK PURPLE GREEN PURPLE GREEN
IN: kiki fep zup OUT: RED GREEN RED GREEN
IN: kiki OUT: GREEN
IN: kiki lug OUT: GREEN GREEN
IN: zup gazzer tufa gazzer zup OUT: RED RED PURPLE PURPLE RED

*GRAMMAR*
wif -> PINK 
 tufa -> PURPLE 
 kiki -> GREEN 
 zup -> RED 
 u1 fep u2 -> [u2] [u1] [u2] [u1] 
 x1 gazzer x2 -> [x2] [x2] [x1] 
 x1 lug -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 