Collisions in T9

T9 is the predictive text technology used by mobile phone vendors for SMS input. If you tap in, say 269, T9 will guess that you mean "BOY," since 2 codes fo ABC, 6 for MNO and 9 for WXYZ. But what about number-patterns that can stand for multiple words? T9 presents a list of possible words, and invites you to pick the correct one. Sometimes, these lists can be quite long: here, a perl hacker has written a script to uncover common English words that share the same T9 numeric code:
729 : PAW, PAY, PAZ, RAW, RAY, SAW, SAX, SAY
76737 : PORES, POSER, POSES, ROPER, ROPES, ROSES, SORER, SORES
46637 : GONER, GOODS, GOOFS, HOMER, HOMES, HONER, HONES, HOODS, HOOFS, INNER
22737 : ACRES, BARDS, BARER, BARES, BASER, BASES, CAPER, CAPES, CARDS, CARES, CASES
7283 : PATE, PAVE, RATE, RAVE, SATE, SAUD, SAVE, SCUD
2273 : ACRE, BARD, BARE, BASE, CAPE, CARD, CARE, CASE
Link (Thanks, Sandy!)