hymn fol.6v Tu retro...
http://lila-erc.eu/data/lexicalResources/NLW/id/attestation/4398 <http://www.w3.org/nl/lemon/frac#Attestation>
hymn fol.6v Tu retro...
hymn fol.6v Tu retroacta crimina | tua remitte gracia | et a futuris adhibe | custodiam mitissime. ]