Words Which Spell The Same Both Ways

A person with a considerable amouut oí upare time on his hands has collected the íollowing list oí words which may be spelled forwards or backwards - palindromes, as they are called in learned language: Anna, bab, bib, bob, bub, civic, dad, deed, deifled, dewed, did ecee, eve, ewe, eye, gog, gig, gag, level, madam, noon, otto, pap, peep, pip, pop, pup, redder, refer, repaper, reviver, rotator, sees, sexes, shahs, tat, tit, toot.