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

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

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