bohr[8], bory[7], roby[7], rybo[7], hory[7],
boy[6], oby[6], hoy[6], bry[6], ryb[6], hyr[6], bor[5], rob[5], hor[5], rho[5],
by[5], bo[4], ho[4], oh[4], or[2], ro[2],
