bbbb bbch bbci bbeb bbrc bcbc bccc bcci bcec bcer bche bcie bebb bebe bebi beby bech beci beeb beer beey behr beic beir berc bere beri berr bery beye beyi bhcc bher bhie bhir bibb bibe bibi bicc bice bich bici bieb bier bihe bihi birb bire biri birr biry brcb brce breb brec bree brei brer brey bric brie brih brrr bry- brye byce bych byer byre cbbc cbcc cbce cbcr cbec cbee cber cbir cbre cbrh cbry ccbc cccb cccc ccci ccee cche cchr cchy ccic ccii ccir ccrc ccre ccri cec- cece ceci ceeb ceec cer- cerc cere ceri cery chce chch chci cheb chec chee cheh cher chey chib chic chie chih chir chrb chrc chrr chy- chyc cibc cibe cibi cicc cich cici cicr ciee cier cihr ciii cirb circ cire cirh ciri cirr crbc crcc crce crcr cre- creb crec cree creh crei crib cric crie cry- cryb cybb cybc cybi cyc- cycb cycc cyre cyy- cyyc ebbc ebbr ebby ebcc eber ebic ecbc ecbe eccb eccc ecce ecci eche ecib ecrc ecri ecrr eeby eeee eerc eery ehcc eheh eher ehre eich eiec eiei eier eire eiry erbb erbe ercc erce erch ereb erec erei erer erhc eric erie erih errc erre eryc erye eyeb eyec eyer eyey eyir eyre eyry eyyr h-ii hbic hcbc hccb hccc hcch hchi hebb hebe hebi hebr heby hech heeb heer hehe heic heie heih heir herb herc here heri herr hery heye heyh heyr hhhh hi-c hibi hicc hice hich hiei hier hihc hihe hihi hiie hire hiri hree hrib hrrc hryb hybe hyce hyer hyhe hyre i-be i-by ibec ibeh ibie ibrc ibri ibyi icbc iccb iccc icci iccr icec icee icer icey ichc iche ichi ichr ichy icrc icre icrr icry iecc ieie iere ieri ihcc iher ihrc ihre iiie iiii iirc irbe irby ircc iree irer iri- iric irie iriy irrc irre irri iyer iyre rbbb rbbr rcbc rccb rccc rchb rcic rcyc rebb rebe recc rece rech reci recr recy reeb rehb rehe rehi reii reir rere reri rery reye rhce rheb rhee rhib rhye rib- ribe riby ricc rice rich rier rire riri rrrr rybe rych ryeb ryeh ryhb yber ybry yccc ycch ycee yche ycie yech yeer yehe yehr yeie yeii yeir yerb yere yeri yerr yery yeye yeyi yeyr yher yirb yire yirr yyyy