abis[6], ibis[6], bars[6], bris[6], airs[4], rais[4], sari[4], iris[4],
abi[5], bai[5], bar[5], bis[5], air[3], rai[3], ais[3], ars[3], ras[3], sir[3],
ab[4], bi[4], ai[2], ar[2], as[2], si[2],
