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

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

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