LETTERIZE(1)							    Miscellanea 						      LETTERIZE(1)

NAME

       letterize_ - phone-number to letter-mnemonic generator

SYNOPSIS

       letterize nnnnnnn

DESCRIPTION

       This program tries to help you find a letter mnemonic matching a given phone number.

       It emits to standard output each possible pronounceable mnemonic, one per line, using the American standard mapping of dial letters to
       numbers (2 goes to ABC, 3 to DEF, 4 to GHI, 5 to JKL, 6 to MNO, 7 to PRS, 8 to TUV, 9 to XYZ).

       The program uses a table of pronounceable letter-triples derived from a dictionary scan. Each potential mnemonic must be such that all of
       its letter-triples are in the table to be emitted. About 30% of possible triples are considered pronounceable.

       A typical 7-digit phone number has 19,683 possible mnemonics, but this test usually cuts the list down to a few hundred or so, a reasonable
       number to eyeball-check. For some numbers, the list will, sadly, be empty.

       It's best to leave out punctuation such as dashes and parens.

BUGS

       The filtering method doesn't know what plausible medial triples are not reasonable at the beginnings and ends of words.

       I'm not sure what table position 0 (which is what 0 and 1 are mapped to) means. If you figure it out, you tell me. I really should have
       generated my own table, but that would have been more work than this seemed worth -- if your number contains either, you probably need to
       generate your mnemonic in disjoint pieces around the digits anyway.

AUTHOR

       Eric S. Raymond esr@snark.thyrsus.com. It's based on a table of plausible letter-triples that had no name attached to it. Surf to
       http://www.catb.org/~esr/ for updates and related resources.

letterize							    05/30/2012							      LETTERIZE(1)