HE
Worth 5 points before any premium square, and the 12th highest-scoring of 96 — tied with 21 others.
HE extends into 12 three-letter words, which is the 36th most extendable of 96 — tied with 4 others. That is the number worth memorising: a two-letter word is a place to put tiles, but a well-hooked one is a place to put them where the board stays open.
Every hook
- S→SHE
- T→THE
- H→HEH
- M→HEM
- N→HEN
- P→HEP
- R→HER
- S→HES
- T→HET
- W→HEW
- X→HEX
- Y→HEY
Not all of them are equally reachable, which a bare count of 12 hides. HE hooks on 10 distinct letters, and the ones you are likeliest to be holding are T (36% of opening racks), N (36% of opening racks) and R (36% of opening racks). The rarest is X, at 7%.
How often you can actually play it
Out of an opening rack, 7.48% of the time you hold the letters for HE outright, the 44th likeliest of 96 — tied with 8 others. Counting a blank as whichever letter is missing lifts that to 15.19%, though spending one of the two blanks on a two-letter word is rarely the play. Exact hypergeometrics over the 100-tile bag, not a simulation.
It reverses
HE backwards is EH, which is also good. That is how most of this list is actually learned — 46 of the 96 come in reversible pairs, so knowing one gets you the other free.