14. The speech recognition system according to claim 13 , further comprising: a function word extraction means that extracts, from the function word dictionary, function words corresponding to the positions, on the time series, at which the plurality of groups of the preceding N best solutions appear, wherein the output presentation means presents the function words extracted by the function word extraction means in association with the individual preceding best solutions of the plurality of groups of the preceding N best solutions.
13. The speech recognition system according to claim 12 , further comprising: a function word dictionary for storing function words representing the positions at which utterances appear in association with the positions, wherein, when the following best solution in any one group of the following N best solutions out of the plurality of groups of the following N best solutions agrees with a function word, the degree of association calculation means sets the position represented by the function word as the position at which a group of the following N best solutions appear, the group of the following N best solutions being chronologically next to the one group of the following N best solutions including the following best solution, which agrees with the function word.