According to tangency portfolio allocation, the allocation in stock A is $0\mathrm{.}1,$ the allocation in stock B is $0\mathrm{.}4,$ the allocation in stock C is $0\mathrm{.}5.$ The expected return of the tangency portfolio is $12\%.$ Now the investor also considers risk$-$free asset as part of the investment.The expected return of the complete portfolio is $16\%$ and the weight on riskfree asset is $-0\mathrm{.}5.$ The expected return of the riskfree asset is$\_\_\_\_\_,$ the portfolio weight on stock A is$\_\_\_\_\_\_$ the portfolio weight on stock Bis$\_\_\_\_$ the portfolio weight on stock C is$\_\_\_\_\_$