bbbb bbci bbeb bbrc bcbc bccc bcci bcec bcer bcie bebb bebe bebi beby beci beeb beer beey beic beir berc bere beri berr bery beye beyi beze bezi bibb bibe bibi bicc bice bici bieb bier birb bire biri birr biry bize bizz brcb brce breb brec bree brei brer brey brez bric brie briz brrr bry- brye byce byer byre bzer bzie bzyb bzzz cbbc cbcc cbce cbcr cbec cbee cber cbir cbre cbry ccbc cccb cccc ccci ccee ccic ccii ccir ccrc ccre ccri cec- cece ceci ceeb ceec cer- cerc cere ceri cery ceze cezy cibc cibe cibi cicc cici cicr ciee cier ciez ciii cirb circ cire ciri cirr cize crbc crcc crce crcr crcz cre- creb crec cree crei crib cric crie cry- cryb cryz cybb cybc cybi cyc- cycb cycc cyre cyy- cyyc czyz ebbc ebbr ebby ebcc eber ebic ecbc ecbe eccb eccc ecce ecci ecib ecrc ecri ecrr eeby eeee eerc eery eeze eiec eiei eier eire eiry erbb erbe ercc erce ereb erec erei erer erez eric erie eriz errc erre eryc erye erzi eyeb eyec eyer eyey eyez eyir eyre eyry eyyr ezer ezri i-be i-by ibec ibie ibrc ibri ibyi icbc iccb iccc icci iccr icec icee icer icey icrc icre icrr icry iecc ieie iere ieri iiie iiii iirc irbe irby ircc iree irer iri- iric irie iriy irrc irre irri iyer iyre izby izze izzy rbbb rbbr rcbc rccb rccc rcic rcyc rebb rebe recc rece reci recr recy recz reeb reii reir reiz rere reri rery reye reze rezi rib- ribe riby ricc rice rier riez rire riri rize rizi rizz rrrr rybe ryeb ryze yber ybry yccc ycee ycie yeer yeie yeii yeir yerb yere yeri yerr yery yeye yeyi yeyr yezi yirb yire yirr yyyy zber zebe zeir zeri zeze zice zirc ziri ziyi zizi zizz zrce zrze zyyi zzzz