We also investigate the accuracy on a word-to-word basis for 250-words using 10 fold cross validation. We observe that only 2 words suffer 0 % accuracy. As shown in Fig. 5, 40% words (100 words) are recognized with accuracy of 80% or above. Only 11 % words (29 words) give accuracy below 50%. The detailed distribution of the number of words with respect to the percentage accuracy is shown in Fig. 5.