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

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

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