in subtitle, a vertical line appears over e
goe̍h
line 6 1st word has vertical line over u
tau̍h
line 11 word has vertical line over a and i
pa̍t-mi̍h
and indeed, it replaces the dot over the i,
and it is distinct from an i with accent.
line 12 1st word has vertical line over e
pe̍h
line 23 it appears over the o
tio̍h