Meaning of the Sanskrit Word: yayoh

  yayoù—in both of which (rivers)    SB 4.6.25, SB 4.6.26
  yayoù—of which two    SB 3.29.35
  yayoù—by whom    SB 4.1.13
  yayoù—both of whom (Nara and Näräyaëa)    SB 4.1.53

Can't find any compound Sanskrit words containing yayoh.