What is the world's longest palindrome?

Here you go:



A man, a plan, a carpus, AEC, Rickey, EKG, navettes, Sorcha, Basil,

BSHA, Tizes, Ojai, AOU, Lana, Juta, Tildi, Komsa, REME, Rab, Manado,

Opaline, Bess, a rgen, a hcl, a robalo, Caracalla, Hagai, Dax, a

pixel, Alo, Eda, AMS, Rom, Ron, Ali, Alf, Rob, Edi, Alb, Edo, Pta,

ScB, a lien, a rom, Leal, Tanana, OSA, LLB, a sav, ROT, OSD, a bid,

Annabal, Kiona, a rim, Assam, a dual, a lye, Solis, Nora, DSM, Ven, a

longa, Rella, Eire, Tulsa, Far, Tsuga, Seel, Ardis, R