berom[8], borem[8], erbom[8], rober[7], remor[6],
brem[7], brom[7], romb[7], bero[6], ober[6], erom[5], orem[5],
bom[6], mob[6], ber[5], erb[5], reb[5], bor[5], rob[5], brr[5], mer[4], rem[4], mor[4], ero[3],
be[4], bo[4], em[3], me[3], om[3], eo[2], er[2], re[2], or[2], ro[2],
