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

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

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