C:\test>head -n 2m phrases.txt > 884345.dat

C:\test>884345-buk 884345.dat
words178691
ngrams13962318
perl.exe                      4564 Console                    1  2,102,076 K

C:\test>head -n 3m phrases.txt > 884345.dat

C:\test>884345-buk 884345.dat
words178691
ngrams20850624
perl.exe                      5724 Console                    1  3,185,344 K