The phrase "a string of mainly" is correct and usable in written English.
It can be used to describe a series of items or elements that are predominantly of a certain type or category.
Example: "The report included a string of mainly positive feedback from the participants."
Alternatives: "a series of primarily" or "a collection of mostly".
They were placed in indefinite mandatory detention in a string of mainly isolated desert camps, whose legislative architecture had been lain down by the Keating government in 1992.
Turkey's firm support for Syria's rebels has won Mr Assad's enmity along with that of Iran, home to several PKK camps.Last month Mr Assad ceded control of a string of mainly Kurdish towns, prompting Turkey to send more troops to the border.
Since her arrival the FN has won mayoral elections across a string of mainly southern towns, made strong gains in local and regional elections and, in 2014, won outright the European Parliament elections with support from one in four voters.
Since her arrival, the FN has won mayoral elections across a string of mainly southern towns, made strong gains in local and regional elections, and, in 2014, won outright the European Parliament elections with support from one in four voters.
The big six suppliers have been repeatedly fined this year by the regulator for a string of abuses, mainly over treatment of residential customers.
Since last year, Alphabird has announced a string of acquisitions, mainly focused on bringing new technologies to its audience development platform.
These are not-for-profit co-operatives owned and controlled by their members but, as Money revealed last week, there have been a string of closures of mainly small credit unions in recent months.
Her picture collection provided Mary with inspiration for a string of short stories, mainly romantic adventures, the most successful of which, Spaghetti à la Christophe, was widely syndicated after being published in Honey magazine.
In fact, a string of recent takeovers has mainly featured investors from further afield.
The lenders shot down both proposals.In the end, Mr Orbán's populist conservative Fidesz party opted for a string of windfall taxes on mainly foreign companies and turned its back on the multilateral lenders.
Arviat is the furthest south of a string of isolated communities - mainly Inuit towns - running up the Hudson Bay and along the Arctic Ocean shores.
