Columbia subject headings:
English language--Middle English, 1100-1500--Periphrasis.
English language--Old English, ca. 450-1100--Periphrasis.
Harvard subject headings:
English language--Middle English, 1100-1500--Periphrasis.
Princeton subject headings:
English language--Middle English, 1100-1500--Periphrasis.
English language--Middle English, 1100-1500--Verb.
English language--Old English, ca. 450-1100--Verb.