Mnemonic: MyanMer Pastha Bread Fund

Represents: Lyman, Balmer, Paschen, Brackett, Pfund

The first word MyanMer represents Lyman as well as Balmer. Myan and Lyman sounds similar. Mer in Myanmer as well as Balmer ends with Mer. The rest of the words contain the first alphabet as the key to remember the spectral line series names.