In the context of data hazards, explain how data$-$forwarding will help to prevent data hazards. Also, identify the hazards in the following codes and SHOW with an elaborate diagram, how stalls can be used to mitigate the hazards in the following instructions.

i$)$ ADD X$12,$ X$15,$ X$19$

ADD X$13,$ X$12,$ X$15$

ii$)$ SUB X$17,$ X$07,$ X$20$

ADD X$07,$ X$12,$ X$09$

iii$)$ LDUR X$5,[$X$1,$#$0]$

ADD X$6,$X$5,$X$1$