---
name: "pair-at-a-time"
section: "1"
platform: "linux"
package: "ncbi-entrez-direct"
version: "24.0.20250523+dfsg-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/pair-at-a-time"
---

# pair-at-a-time(1)

parse an input file into alphanumeric word pairs

## NAME

pair-at-a-time - parse an input file into alphanumeric word pairs

## SYNOPSIS

**pair-at-a-time**

## DESCRIPTION

**pair-at-a-time** reads a text file from standard input, extracts all sequences of digits and English letters, lowercases any capital letters, and prints all pairs of distinct adjacent terms in input order, one pair per line.

## SEE ALSO

[**accn-at-a-time**(1)](/accn-at-a-time/1.md), [**filter-stop-words**(1)](/filter-stop-words/1.md), [**join-into-groups-of**(1)](/join-into-groups-of/1.md), [**word-at-a-time**(1)](/word-at-a-time/1.md), [**xsearch**(1)](/xsearch/1.md).