20120421_PQR__24344341

20120421_PQR_AB_ *24344341
20120421_PQR_AB*

*24344341*

20120421_PQR_AB

20120421_PQR_AB

*24344341*

20120421_PQR_AB_MER__24344341

20120421_PQR_AB__24344341

20120421_PQR_AB___24344341

20120421_PQR_AB_PQRER_24344341

20120421_PQR_AB_PQRER__24344341

20120421_PQR_AB_PQRER__24344341

20120421_PQR_AB_WWF___24344341

20120421_PQR_WXYZ_BA_24344341

20120421_PQR_WXYZ__24344341

20120421_PQR_WXYZ___24344341

20120421_PQR_WXYZ_PQRER_24344341

PQR__20120421_224320

PQR_AB

20120421_PQR_AB_MER__24344341

20120421_PQR_AB__24344341

20120421_PQR_AB___24344341

20120421_PQR_AB_PQRER_24344341

20120421_PQR_AB_PQRER__24344341

20120421_PQR_AB_PQRER__24344341

20120421_PQR_AB_WWF___24344341

20120421_PQR_WXYZ_BA_24344341

20120421_PQR_WXYZ__24344341

20120421_PQR_WXYZ___24344341

20120421_PQR_WXYZ_PQRER_24344341

PQR__20120421_224320

PQR_AB

*20120421_224320*

PQR_AB

PQR_AB

*20120421_224320*

PQR_AB_20120421_224320

PQR_AB

PQR_AB_MER__20120421_224320

PQR_AB__20120421_224320

PQR_AB___20120421_224320

PQR_AB_PQRER_20120421_224320

PQR_AB_PQRER__20120421_224320

PQR_AB_PQRER__20120421_224320

PQR_AB_WWF___20120421_224320

PQR_WXYZ_BA_20120421_224320

PQR_WXYZ__20120421_224320

PQR_WXYZ___20120421_224320

PQR_WXYZ_PQRER_20120421_224320

In this string I want to extract only starting with PQR.

I used split string but couldn’t get to a result. I get only till first entry.