d21v e21va f21vao g21v h21va

2s2va 3s2vao 4s2v 5s2va 6s2vao

rj3vao sj3v tj3va uj3vao vj3v

ga4v ha4va ia4vao ja4v ka4va

504va 604vao 704v 804va 904vao