Identify all the data hazards in the following sequence of instructions. For each hazard, state the register involved, the writing instruction and the reading instruction.

add $t0, $s0, $s1

xor $t1, $t0, $s2

lw $s0, -12($a0)

sub $s5, $s0, $s1

addi $s1, $s1, 4

register writer reader $s1 addi sub

register writer reader $s0 lw sub

register writer reader $t0 add xor

register writer reader $s0 lw add