7 letter words
HARPOON​12
PATROON​9
PRONOTA​9
6 letter words (10 words)
PROTON​8
PATRON​8
PHOTON​11
ORPHAN​11
PARTON​8
PRONTO​8
TARPON​8
ANTHRO​9
RATOON​6
THORON​9
5 letter words (24 words)
PHOTO​10
NORTH​8
PORNO​7
HONOR​8
TORAH​8
TROOP​7
ORTHO​8
PROTO​7
APRON​7
THORN​8
PHONO​10
PORTA​7
THORP​10
PANTO​7
ROTAN​5
TRONA​5
POORT​7
TORAN​5
THORO​8
APORT​7
4 letter words (67 words)
THAN​7
PART​6
PORN​6
PORT​6
POOR​6
PATH​9
ROOT​4
ONTO​4
HORN​7
TRAP​6
HART​7
RANT​4
POOH​9
TORN​4
NOAH​7
PANT​6
OATH​7
HARP​9
PHAT​9
TOON​4
3 letter words (61 words)
NOT​3
TOP​5
ART​3
TOO​3
HOT​6
PRO​5
NOR​3
HAT​6
HOP​8
PAN​5
PAR​5
RAN​3
PAT​5
POT​5
OPT​5
RAP​5
RAT​3
TAN​3
HON​6
TAP​5
2 letter words (17 words)
TO​2
ON​2
OR​2
AT​2
AN​2
NO​2
OH​5
PA​4
PO​4
AR​2
OP​4
HA​5
AH​5
TA​2
HO​5
OO​2
NA​2