William Looi

He is using 5 method , first one is to track strong and weak side, example, BBBBpBBBp,  banker is strong and player is weak, so he may bet banker .

second one is OTB4L. example BBppBBppBBBpp   this is otb4l opposite of otb4l is TB4L if you use otb4l on tb4l event than you will lose.

third one is repeat and opposite.  BBBBBBBpppppppBBppppBBB this is repeat,

the fourth one is OO/TT  example  BBBpppBBBpppBBBppp  this is OO, opposite of OO is TT

the firth one is for Random approach.