There's a principle of "svara" in Shas, which exists on a d'oraisa level (see this related question).
A few examples of svaras:
1) המוציא מחברו עליו הראיה - "the burden of proof rests upon the claimant" (see "הכלל ומקורו" number 3)
2) כל דאלים גבר- "whoever is stronger prevails" (under “מקור וטעם”)
3) מאי חזית דדמא דידך סומק טפי- be killed rather than kill (lit: "who says your blood is redder than his etc."- see "Understanding the reasoning for be killed rather than kill"
Does a list exist that has all the instances in Shas where the principle of "svara" is used?
(additional opinions of Rishonim who use "svara" to explain a halacha or din are also welcome)