Which preposition to use with pentagram

by Occurrences 1%

" A flaw in that pentagram of a time-table, that pentagram by which the demons of distraction were to be excluded from Mr. Lewisham's career to Greatness, was the absence of a clause forbidding study out of doors.

of Occurrences 1%

" A flaw in that pentagram of a time-table, that pentagram by which the demons of distraction were to be excluded from Mr. Lewisham's career to Greatness, was the absence of a clause forbidding study out of doors.

Which preposition to use with  pentagram