The Inverted Ankh
A lifespan is akin to reciting an alphabet—living in reverse is reciting that alphabet backwards—within the confines of an alphabet, as in lifespans, one cannot recite it past the final letter or before the first letter—reciting the alphabet must either stop or loop from the last letter to the first letter again viceversa—the before and after with alphabets and lifespans must be sought after beyond their definitional parameters—seeking the before and after could yield no more alphabets or infinite alphabets—lifespans.