Here's a breakdown:
Words with 3 letters or more:
* in
* on
* no
* or
* sin
* son
* tin
* ton
* pin
* rip
* sir
* sop
* top
* pot
* pet
* ten
* torn
* rope
* rein
* reins
* pore
* pint
* spite
* sport
* store
* inert
* spear
* scone
* screen
* sector
* siren
* spine
* stone
* tenor
* torso
* inspect
* inspector
Words with 2 letters:
* in
* on
* no
* or
* is
* it
* re
* ro
* si
* so
* to
* pi
Total: 38 words
Let me know if you'd like to explore words from another word!