irrst[5], sirrt[5], risst[5],
tics[7], sirr[4], riss[4], sirs[4], irrt[4], rist[4], isst[4],
cis[6], sic[6], tic[6], irr[3], sir[3], iss[3], ist[3],
si[2], ti[2], st[2],
