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

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

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