From Wiktionary, the free dictionary
тона́м • (tonám) m inan pl
- dative plural of тон (ton, “(all meanings)”)
то́нам • (tónam) m inan pl
- dative plural of тон (ton, “tone (sound)”)
тона́м or то́нам • (tonám or tónam) m inan pl
- dative plural of тон (ton)