I learnt or I learned?
I burnt or I burned?
He sprang or he sprung?
He was hanged or he was hung?
With regard to line 4:-
The superb musical My Fair Lady has the expert of spoken English Henry Higgins singing about Eliza Doolittle :-
"Look at her, a prisoner of the gutter,
Condemned by every syllable sshe utters.
By law she should be taken out and hung,
For the cold-blooded murder of the English tongue."
The lyricist was Alan Jay Lerner, (so maybe my line 1 could be Lerner or Learner!)
In a 1979 interview Lerner said that he knew it should be "hanged", not "hung", but "I thought, oh well, maybe nobody will notice it, but not at all. Two nights after it opened, I ran into Noël Coward in a restaurant, and he walked over and he said, "Dear boy, it is hanged, not hung." I said, "Oh, Noel, I know it, I know it! You know, shut up!" So, and there's another, "Than to ever let a woman in my life." It should be, "as to ever let a woman in my life," but it just didn't sing well."