Qui post me venit ante

Source: 
Vercelli, Biblioteca Capitolare, CLXX
Folio: 
011r
Sequence: 
4
Feast: 
Fer. 5 Hebd. 2 Adv.
Office/Mass: 
L
Genre: 
A
Position: 
B
Cantus ID: 
004493
Mode: 
4T
Differentia: 
G1
Differentia database: 
1--l-k-l-m-k-hk--4 T31a
Manuscript Reading Full Text (standardized spelling): 
Qui post me venit ante me factus est cujus non sum dignus calceamenta solvere