to pray lord siva we use panchakshari ( 5 letters) OM NA MAH SI VA YA
to pray lord vishnu we use ashtakshari (8 letters) OM NA MO NA RA YA NA YA
to pray sri sainath maharaj we use dwadasakshari (12 LETTERS)
OM SAI SRI SAI JAYA JAYA SAI
OM SAI SRI SAI JAYA JAYA SAI
OM SAI SRI SAI JAYA JAYA SAI
OM SAI SRI SAI JAYA JAYA SAI
OM SAI SRI SAI (OM) JAYA JAYA SAI
BABA BLESSES ALL