bbbb bbbq bbeb bebb bebe bebi beeb beer beir bere beri berr beru beur bibb bibe bibi bieb bier bieu biqi birb bire biri birr biru bque breb bree brei brer brie briq brrr brue bubb bube bubi bubq bubu buer bueu buie buir buiu bur- burb bure buri burr buru ebbr eber ebru ebur eeee ei-q eiei eier eire equ- eque equi erbb erbe ereb erei erer erie eriq eriu erqi erre erub erur eubi euer eur- eure i-be ibie ibri ieie iere ieri iiie iiii iqer ique irbe iree irer iri- irie irre irri iuiu q-be qeii qere qeri qerq qiru qqqq qube qubi quee quer quib quie quir quri quu- rbbb rbbr rebb rebe rebu reeb reii reir reiu rere reri reru reue reuu rib- ribe ribu rier rieu riqq rire riri riue rrrr rubb rube rubi rubu ruer rure ruri ruru u-ie ubbe ubbi uber ubii ubir ueir uirr urbe urbi ure- urib urie uriu urre urri uruq urur uuri uuuu