Rut 4:20-21

4:20 Amminadab was the father of Nachshon, Nachshon was the father of Salmah, 4:21 Salmon ¹  was the father of Boaz, Boaz was the father of Obed,

[4:21]  ¹ sn Salmon appears to be an alternate spelling of Salmah in the preceding line.