B4

abbreviation
before
Historical Examples

B – b4, the latter move enabling White to queen the pawn with a check.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 Various

The coefficient of this glyph is very clearly 4, thus confirming our identification of b4 as 12 Imix.
An Introduction to the Study of the Maya Hieroglyphs Sylvanus Griswold Morley

The uinal head with its characteristic mouth curl appears in b4.
An Introduction to the Study of the Maya Hieroglyphs Sylvanus Griswold Morley

The uinal and kin glyphs have been crowded together into one glyph-block, b4, the uinal appearing in b4a and the kin in b4b.
An Introduction to the Study of the Maya Hieroglyphs Sylvanus Griswold Morley

Although the glyph in b4 is too much effaced to read, we are justified in assuming that it is the head variant of the katun sign.
An Introduction to the Study of the Maya Hieroglyphs Sylvanus Griswold Morley

The others engaged in line, within point-blank, the rear-admiral hoisting the flag for close action (b4).
Types of Naval Officers A. T. Mahan

When & if Spr returns wil acpt state-fed laws as b4 but meantime circs warrant adapt to prevailing conditions.
And Then the Town Took Off Richard Wilson

chat
before.