If `|[bar(a).bar(a), bar(a).bar(b),bar(a).bar(c)], [bar(a).bar(b), bar(b).bar(b), bar(b).bar(c)], [bar(a).bar(c), bar(b).bar(c), bar(c).bar(c)]|`=144 then the volume of tetrahedron formed with coterminous edges `bar(a) ,bar(b)` and `bar(c)` is equal to