dran[4], rand[4], darr[4], narr[4], dads[4], sand[4], rads[4],
dad[3], dan[3], dar[3], rad[3], ran[3], rar[3], das[3], ans[3], ars[3], ras[3],
ad[2], da[2], an[2], na[2], ar[2], as[2],
