Figure 2 shows an example of three pairwise alignments that are mutually inconsistent: the English letter e is aligned to the phoneme [i] and to the grapheme ベ(BE), which are not aligned to each other Our solution is to select one of the input strings as the pivot for aligning the remaining two strings.
we align the pivot string to each of the other two strings through one-to-many alignments, where the maximum length of aligned substrings in the pivot string is set to one.