You have that all mixed up.
‘Spasibo’ (thank you) is SPB, that is:
c ** …** English “s”
п ** ._ _ .** English “p”
б ** _…** English “b”
DSW is abbreviated Russian Do svidaniya (Досвидания) or English Good Bye:
д ** _ . .** English “d”
c ** …** English “s”
в ** . _ _** English “w”
Regards & 73!
Andrei