Your copy of Robert Burns' A Man's a Man for A' That appears to me to have left out one line in the final stanza which when entered would make the 5th and 6th lines read:
For a' that, an' a' that,
It’s cuming yet, for a' that,
John Anderson My Jo
John Anderson my jo, John, When we were first acquent, Your locks were like the raven, Your bonny brow was brent; But now your brow is bled, John, Your locks are like the straw, But blessings on your frosty pow, John Anderson my jo!