Manually set stanza numbers for repeat alternatives

[Michael Wagner]

I am entering a song - the Beatle’s “Let It Be - into lilypond where there 
there is a long repeat - “\repeat volta 4 {}”, but there are only 2 
alternatives. Lillypond labels the first alternative “1-3”, and the second 
alternative “4””

But in the song the first alternative is for stanzas 1 and 3, second 
alternative for verses 2 and 4.  

For those who recall the song the first and third verse ends with “Whis — per 
words of wis — dom, let it be. (Verse 2) And when __“. The second and fourth 
verses end with “There will an answer, let it be.”

I can’t figure out how to set the stanza numbers for the first alternative to 
“1.3”,  and for the second alternative to “2.4”. I looked at the manual, and 
the only info I found seemed to be pretty complicated, repeatCommands to a 
scheme style list, which has some pretty obscure syntax for a non-scheme 
programmer.

Is there some simple way to do this?

Sent from my iPad