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

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

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