Please enable JavaScript to use regex101
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Regular Expression
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^\s*(add|and|nor|or|sub)\s*(\$[a-z0-9]{2,4}),\s*(\$[a-z0-9]{2,4}),\s*(\$[a-z0-9]{2,4})\s*$
/
gm
Input 1
1
New
add $t3,$s3,$s5 add $t3,$s3,$s5 add $v0,$t0,$t0 add $v0,$t0,$t0 and $t2,$t3,$t4 and $t2,$t3,$t4 nor $s0,$s5,$s2 nor $s0,$s5,$s2 or $s0,$s0,$s1 or $s0,$s0,$s1 or $s0,$s2,$s5 or $s0,$s2,$s5 sub $s3,$t0,$t1 sub $s3,$t0,$t1 sub $t0,$zero,$t1 sub $t0,$zero,$t1 sub $t1,$t4,$t8 sub $t1,$t4,$t8
Substitution
add $t3,$s3,$s5 add $t3,$s3,$s5 add $v0,$t0,$t0 add $v0,$t0,$t0 and $t2,$t3,$t4 and $t2,$t3,$t4 nor $s0,$s5,$s2 nor $s0,$s5,$s2 or $s0,$s0,$s1 or $s0,$s0,$s1 or $s0,$s2,$s5 or $s0,$s2,$s5 sub $s3,$t0,$t1 sub $s3,$t0,$t1 sub $t0,$zero,$t1 sub $t0,$zero,$t1 sub $t1,$t4,$t8 sub $t1,$t4,$t8