boom[7], obom[7], brem[7], brom[7], romb[7], rebe[6], bero[6], ober[6], boro[6], robo[6], erem[5], erom[5], orem[5], moro[5], orom[5], oere[4], oreo[4],
bom[6], mob[6], bee[5], ber[5], erb[5], reb[5], bor[5], rob[5], mee[4], omo[4], mer[4], rem[4], mor[4], ero[3], oro[3],
be[4], bo[4], em[3], me[3], om[3], ee[2], eo[2], er[2], re[2], or[2], ro[2],