def __init__(self, strings):
self.tokenExtractor = TokenExtractor()
self.gapStringExtractor = GapStringExtractor()
tokens = self.tokenExtractor.extract(strings)
gapStrings = self.gapStringExtractor.extract(strings, tokens)
gapFillers = self.gapStringExtractor.convert(gapStrings)
assert len(tokens) == len(gapFillers)
self.seq = []
nTokens = len(tokens)
for i in range(nTokens):
self.seq.append(TokenAndGap(tokens[i], gapFillers[i]))
