Let $\overline{\mathrm{a}}=\mathrm{p}\left(\overline{\mathrm{i}}+\overline{\mathrm{j}}+\overline{\mathrm{k}}\right).\overline{\mathrm{b}}=\overline{\mathrm{i}}+\overline{\mathrm{j}}-2\overline{\mathrm{k}}$ and $\overline{\mathrm{c}}=2\overline{\mathrm{i}}-\overline{\mathrm{j}}+2\overline{\mathrm{k}}$ be three vectors. If the value of $\left[\overline{\mathrm{a}} \overline{\mathrm{b}} \overline{\mathrm{c}}\right]$ is not more than 15 and not less than $-5,$ then $\mathrm{p}$ lies in the interval