arid[4], radi[4], raid[4], darr[4],
dia[3], dar[3], rad[3], air[3], rai[3], dir[3], rar[3], irr[3], dau[3], rau[3], dur[3],
ad[2], da[2], ai[2], ar[2], au[2], du[2], ud[2], ui[2], ur[2],
