hool[8], sohl[7], solo[7], silo[6], soli[6], sols[6], soso[6], hiss[5], ossi[5],
hol[6], loh[6], oho[6], hoi[5], los[5], sol[5], his[4], iss[3],
ho[4], oh[4], hi[3], os[3], so[3], si[2],