The phrase "at being of" is not correct and does not convey a clear meaning in written English.
It is unclear when it could be used, as it does not form a coherent expression.
Example: "He excelled at being of no help during the project." (Note: This example is awkward and not recommended.)
Alternatives: "in terms of" or "regarding".
I remember talking with him early in his career about his strong views on Islamic extremism and he always impressed me, both with his pride at being of Pakistani heritage but also at his family's innate Britishness.
The 32-year-old, who recorded no abnormal tests, has repeatedly insisted on his innocence after his coach Alberto Salazar was accused at being of the centre of doping allegations, according to a BBC investigation.
The highest medieval stone vault in England is at Westminster Abbey at 102 feet, that at York Minster being of the same height but despite its appearance, not actually of stone, but wood.
In the second case, a thing is "certified" (rata) by the fact that it possesses at least the being of an essence.
People go to Dixon for a number of reasons, the most serious at present being that of loyal Americanized Italians and Germans and refugees.
If successful, the argument would provide reason for thinking there is at least one such being of extraordinary power responsible for the existence of the cosmos.
PEEP at an undefined pressure level being of benefit in ARDS derives from a series of experimental and clinical studies.
That crime could have been prevented if HHS had adopted commonsense measures for screening sponsors and checking on the well-being of at-risk children, Portman said.
It was also in Brazil that he caught a tropical virus, a nasty bug that gnawed at the well-being of his heart.
It provides opportunities for women and mothers to meet and further positive family health practices aimed at the well-being of their children.
There also has been a long history of theoretical interest in generativity, the concern for and activity directed at the well-being of others, which has been linked to improved cognitive and physical well-being in aging.
