mv WSO.2047_F.txt WSO.2047.F.txt
mv WSO.2048_F.txt WSO.2048.F.txt
mv WSO.2049_F.txt WSO.2049.F.txt
mv WSO.2050_F.txt WSO.2050.F.txt
mv WSO.2051_F.txt WSO.2051.F.txt