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

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

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