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

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

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