SH
Worth 5 points before any premium square, and the 12th highest-scoring of 96 — tied with 21 others.
SH extends into 5 three-letter words, which is the 14th least extendable of 96 — tied with 2 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
- A→ASH
- A→SHA
- E→SHE
- H→SHH
- Y→SHY
Not all of them are equally reachable, which a bare count of 5 hides. SH hooks on 4 distinct letters, and the ones you are likeliest to be holding are E (60% of opening racks), A (49% of opening racks) and H (14% of opening racks). The rarest is Y, at 14%.
How often you can actually play it
Out of an opening rack, 3.06% of the time you hold the letters for SH outright, the 12th least likely of 96 — tied with 4 others. Counting a blank as whichever letter is missing lifts that to 7.41%, 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.