*SUPPORT*
IN: wif fep zup blicket zup OUT: RED YELLOW GREEN RED
IN: fep wif fep OUT: GREEN YELLOW GREEN
IN: fep blicket zup OUT: RED GREEN
IN: kiki wif OUT: PINK YELLOW
IN: fep fep wif tufa OUT: GREEN GREEN YELLOW GREEN GREEN YELLOW
IN: fep OUT: GREEN
IN: wif gazzer wif OUT: YELLOW YELLOW
IN: kiki OUT: PINK
IN: zup OUT: RED
IN: wif OUT: YELLOW
IN: kiki tufa OUT: PINK PINK
IN: zup blicket fep gazzer wif OUT: GREEN RED YELLOW
IN: kiki kiki gazzer wif gazzer kiki OUT: PINK PINK YELLOW PINK
IN: kiki tufa blicket kiki gazzer kiki OUT: PINK PINK PINK PINK

*QUERY*
IN: kiki kiki OUT: PINK PINK
IN: zup kiki tufa tufa OUT: RED PINK RED PINK RED PINK RED PINK
IN: zup gazzer fep OUT: RED GREEN
IN: zup gazzer wif gazzer zup OUT: RED YELLOW RED
IN: wif fep OUT: YELLOW GREEN
IN: kiki gazzer kiki OUT: PINK PINK
IN: fep fep wif gazzer wif gazzer fep OUT: GREEN GREEN YELLOW YELLOW GREEN
IN: fep zup blicket fep OUT: GREEN GREEN RED
IN: wif tufa gazzer fep OUT: YELLOW YELLOW GREEN
IN: kiki gazzer zup OUT: PINK RED

*GRAMMAR*
wif -> YELLOW 
 zup -> RED 
 fep -> GREEN 
 kiki -> PINK 
 x1 gazzer u1 -> [x1] [u1] 
 x1 tufa -> [x1] [x1] 
 x1 blicket x2 -> [x2] [x1] 
 u1 x1 -> [u1] [x1] 
 