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

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

*GRAMMAR*
zup -> RED 
 lug -> GREEN 
 fep -> PINK 
 dax -> PURPLE 
 x1 gazzer x2 -> [x1] [x2] [x1] [x2] [x2] 
 u1 tufa u2 -> [u1] [u2] 
 x1 wif x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 