Where's Walrus...? Letter L (A Study in Self-Reference)

     Blogger Poe adores self-reference (who doesn't?!) but 

wonders: if a text that uses every letter of the alphabet

is called a pangram and if a pangram that uses every 

letter except one is called a pangrammatic lipogram, 

then what is a pangrammatic lipogram that uses every 

letter except two called?* 

The Walrus and the Lipogram,

In DXV** BC,

Were quick to end their self-ref wend.

Goes Wal, “Don't ya’ll agree

We must disperse...?” (He’d suss'd: his verse

Contain'd no J or Z.***)

     * Names suggested thus far include 'pangrammatic 

bi-pogram,' 'pangrammatic di-pogram' and 'pangrammatic 

twi-pogram.' PlaysWell has yet to indicate a preference.

     ** Read as either "five fifteen" or "dee-ex-vee."

PlaysWell is pleased and proud to recommend either 

and/or both.

     *** Strictly speaking, of course, the verse does contain

both letters, since the last line, in which they appear,

is a part of the verse. Self-reference can prove slippery.