file -: 200 sentences, 1405 words, 44 OOVs
0 zeroprobs, logprob= -3386.69 ppl= 147.762 ppl1= 307.881
file -: 200 sentences, 1405 words, 0 OOVs
44 zeroprobs, logprob= -3198.52 ppl= 111.948 ppl1= 223.935