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

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

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