need assistance creating and populating multiple distribution groups in office 365

can someone provide a powershell script that we can use to create 100+ distribution groups in our cloud based office 365 account [not hybrid] and populate membership.

our input file is:
column a                column b
usera                       group1
userb                       group1
userc                        group 1
usera                       group2
userb                       group2
userc                       group2

many thanks,

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Add-DistributionGroupMember should work for exchange online as well...
Import-csv C:\user.csv | % {Add-DistributionGroupMember $_.Group -Member $_.Member}

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Input csv format..

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siber1Author Commented:
thx Subsun. I will test that with our exchange online account shortly.
siber1Author Commented:
thanks Subsun. worked great!
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