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

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

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