What would the end result look like ideally?
Different options with different results:
… men(fz|ta) … to cut the line short
… tu(fihhv/g/e(why???)|toS2visut2|fwgFE(presumably)|ql-… to just split the nabc on the line change
Those two methods are bad because they rely on a specific page width. If you change width, the piece will be all wrong (or slightly ugly for the second method)
Other solution : use <nlba></nlba> around that word to prevent line breaks in it. This is finnicky and will look ugly at low page widths.
Other solution : have your nabc adhere strictly to gabc groups by using pipes constantly, at the expense of the meaningfulness of horizontal space in neumes.
In Christo
Matthias