bbbb bbch bbeb bbpr bbrc bcbc bcbp bccc bcec bcer bche bcor bcpp bebb bebe bebo bech beeb beep beer behr beo- beor bepo berc bere bero berr bhcc bher bhor bobb bobe bobo boce boch boco boec boee boeo boep boer boho bohr boob booc booe booh boop boor bope bopp bor- bore borh boro borr bpcp bphc bpoe bprc brcb brce breb brec bree breo brep brer brob broc broe broh broo bror brrr c-bo cbbc cbcc cbce cbcp cbcr cbec cbee cber cbpc cbpp cbre cbrh ccbc cccb cccc cccp ccee cche cchp cchr ccob ccoc ccpe ccpp ccpr ccrc ccre ccrp cebp cec- cece ceco cecp ceeb ceec ceop ceor cepc cepe ceph cepo cepp cepr cer- cerc cere cero cerp chbp chce chch chcp cheb chec chee cheh chep cher choc choh choo chop chor chpp chpr chrb chrc chro chrp chrr cobb cobe cobh cobo coce coch coco cocp coep coho coob cooh coop cope coph copo copp copr cor- corb corc core coro corp corr cpbc cpce cpeb cpep cper cpre crbc crcc crce crcr cre- creb crec cree creh creo crep crob croc croe croh croo crop cror crpc ebbc ebbo ebbr ebcc eber eboe eboo ebor ebpo ebro ecbc ecbe eccb eccc ecce ecco eche echo eco- ecop ecpp ecrc ecrr eeee eeoc eerc eero ehcc eheh eher ehre eore epcc epch epec epee eper eph- epoc epor eppc eppo eppp eprb epro eprp erbb erbe ercc erce erch ercp ereb erec erer erhc erob eroc eroe eroo erpe errc erre erro hboc hcbc hccb hccc hcch hcpc hcrp hebb hebe hebo hebr hech heeb heep heer hehe heho heor hepc hepe hepp herb herc here hero herp herr hhhh hhpc hobe hobo hoce hoch hocr hoer hohe hoho hooe hoop hoor hope hopo hopp horc hore horo horr hpcc hppe hree hrob hrpc hrpp hrrc o-eo obbo obec ober oboe obor obre obrh obro ocbc occc oce ocee oche ocpp ocre ocro ocrr oec- oecc oeec oere ohbe ohcc ohee oher ohho ohob ohoh ohre oobe oocr ooer ooho oooh oooo oore opec opep oper opo- opor oppo orbb orbe orbo orce orch orco ore- oreb orec oreh oreo orer orhe oro- oroe oror orpc orpe orph orro pbcc pboc pcbc pccc pcce pcep pcer pchp pcoe pcpb pcpp pcrc pcre pece pech peco pecr peec peep peer pehe peho pehr peor pepe pepo per- perc pere perh pero perp perr phcc phe- phob phoh phoo phrr pobo poce poch poco poer pooh poop poor pop- popc pope popo popp porb porc pore poro porr ppcc pper pppo pppp pprc prbc prcc prcp pre- preb prec pree prep pro- prob proc proe proo prop rbbb rbbr rboh rcbc rcbo rccb rccc rcep rchb rcpo rebb rebe rebo recc rece rech recp recr reeb reep rehb rehe reop repe repo repp repr rere rero rhce rhcp rheb rhee rheo rhob rhoc rhoh rob- robb robe robo rocc roce roch roco roer rohe rohr roob roop roor rope ropo rorc rore roro rpho rpob rpoe rrrr