*SUPPORT*
IN: wif gazzer fep tufa zup fep gazzer OUT: YELLOW GREEN PURPLE RED GREEN
IN: wif wif OUT: YELLOW YELLOW
IN: tufa gazzer tufa OUT: PURPLE GREEN PURPLE
IN: zup blicket zup OUT: RED RED
IN: zup zup blicket zup fep gazzer fep gazzer OUT: RED GREEN GREEN RED RED
IN: wif zup OUT: YELLOW RED
IN: gazzer tufa lug zup wif OUT: GREEN RED YELLOW PURPLE
IN: tufa OUT: PURPLE
IN: tufa tufa lug zup OUT: PURPLE RED PURPLE
IN: wif OUT: YELLOW
IN: wif blicket zup OUT: RED YELLOW
IN: zup fep zup OUT: RED RED
IN: wif lug tufa OUT: PURPLE YELLOW
IN: tufa tufa fep tufa OUT: PURPLE PURPLE PURPLE

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

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