ach[7], chi[7], ich[7], car[6], aha[4], hai[4], iah[4], har[4], rah[4], ihr[4], aar[3], ara[3], air[3], rai[3], rar[3], irr[3],
fa[5], ah[3], ha[3], hi[3], aa[2], ai[2], ar[2],
