The person who wrote the words down made a mistake. There is an LE missing from one of the words. Note also they assumed that Waltham was by Albert and you don't count refrains.

These are all hymn tunes. The numbers are the 'metres' of the tunes, indicating the number of syllables in each line. This makes the 20 numbers as follows:

Waltham 8 7 8 7
Pange 8 7 8 7 8 7
Worlesbury 10 7 10 7
Dix 7 7 7 7 7 7