List words that have vertical or horizontal line symmetry?

Answer 1

Here are some:

Vertical:

A, AH, AI, AIM, AIT, ATOM, AX, AY,

HA, HAM, HAT, HAW, HAY, HI, HIM, HIT, HOT, HOW,

I, IT,

MA, MAT, MAW, MAX, MAY, MITT, MIX, MOM, MOOT, MOW, MUM, MUTT, MY,

OAT, OATH, OH, OUT, OX,

TAW, TAX, THAT, THAW, THY, TOM, TOO, TOW, TOY, TW@T, TWIT, TWIXT, TWO,

VAT, VIM,

WAIT, WATT, WAX, WAY, WHAM, WHAT, WHO, WHOA, WHOM, WHOO, WIT, WITH,

YAM, YAW

Horizontal

EH, EEK, EKE, EX,

HE, HEX, HI, HIE, HIKE, HO, HOE, HOKE,

I,

OH, Ohio, OX.