The below table gives the processing times $($in hours$)$ of seven jobs to be processed on four machines M$1,$ M$2,$ M$3$ and M$4$ in the order M$1,$M$2,$M$3,$M$4.$ Sequence the given jobs using Johnson's method and find the overall processing time.

$\backslash$table$[[,$M$1,$M$2,$M$3,$M$4],[$A$,3,1,4,12],[$B$,8,0,5,15],[$C$,11,3,8,10],[$D$,4,7,3,8],[$E$,5,5,1,10],[$F$,10,2,0,13],[$G$,2,5,6,9]]$