import re
s="""01009700  Samsung  Samsung SGH-N625  GSM 1900,GSM 900  
01009800  Motorola  Motorola T194 EOTD  GSM 1900  
 
01009900  Option International  
,GSM 900  
01009901  Option International  
 
,GSM 1900,GSM 900 01009902 Option International ,GSM 1900,GSM 900 01009903 Option International ,GSM 1900,GSM 900 01009904 Option International ,GSM 1900,GSM 900 01009905 Option International ,GSM 1900,GSM 900 01009906 Option International ,GSM 1900,GSM 900 01009907 Option International ,GSM 1900,GSM 900 01009908 Option International ,GSM 1900,GSM 900 01009909 Option International ,GSM 1900,GSM 900 01009910 Option International ,GSM 1900,GSM 900 01009911 Option International ,GSM 1900,GSM 900 01009912 Option International ,GSM 1900,GSM 900 01009913 Option International ,GSM 1900,GSM 900 01009914 Option International ,GSM 1900,GSM 900 01009915 Option International ,GSM 1900,GSM 900 01009916 Option International ,GSM 1900,GSM 900 01009917 Option International ,GSM 1900,GSM 900 01009918 Option International ,GSM 1900,GSM 900 01009919 Option International ,GSM 1900,GSM 900 
Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 Option Internati. Globetrotter GSM 1800 
01010000  Sierra Wireless Sierra Wireless Aircard 710  GSM 1900  
01010100  Sierra Wireless Sierra Wireless Aircard 750  GSM 1800,GSM 190  
0,GSM 900 """
print(re.findall(r"\b(\d{8}.*?)\W*GSM", s))

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