We have 8 characters, F(o), F(w), G(o), G(w), H(o), H(w), I(o), I(w) and we have 8 spots N: __ __ __ __ S: __ __ __ __ RULE 1: Since we can't put 2 w's in a column, we'll have to spread out our 4 w's over the 4 columns, 1 per column. That means that every column will be a mix of o/w. RULE 2: Can't ...