11 : 0
gary x 1 (a ; andy)
chi wah x 1 (a ; rodger)
jimmy x 1 (a : no)
sam x 1 (a : rodger)
sam x 1 (a : no)
rodger x 1 ( a ; gary)
andy x 2 (a : sam x 2)
andy x1 (a : jimmy )
andy x 2 (a : no x 2)
attend : jimmy, wai, chi wah, rodger, kwai, country ming, fat lo, gary, tai bill, andy, wing chai, sam, fat wong