An urn contains two blue balls (denoted by B1 and B2) and one white ball (denoted by W). One ball is drawn, its colour is recorded, and it is replaced in the urn. Then another ball is drawn, and its colour is recorded. 6.1 Let B1W denote the outcome that the first ball drawn is B1 and the second ball drawn is W. Because the first ball is replaced before the second ball is drawn, the outcomes of the experiment are equally likely. List all nine possible outcomes of the experiment.

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