-er b-p bbb bbc bbe bbh bbo bbp bbr bcb bcc bce bch bco bcp bcr be- beb bec bee beh beo bep ber bhb bhc bhe bhh bho bhp bhr bob boc boe boh boo bop bor bpb bpc bpe bph bpo bpp bpr brb bre brh bro brp brr c-- cbb cbc cbe cbh cbo cbp cbr ccb ccc cce cch cco ccp ccr ce- ceb cec cee ceh ceo cep cer ch- chb chc che chh cho chp chr co- cob coc coe coh coo cop cor cpb cpc cpe cph cpo cpp cpr crb crc cre crh cro crp crr ebb ebc ebe ebh ebo ebp ebr ec- ecb ecc ece ech eco ecr eeb eec eee eeo eep eer ehb ehc ehe ehh eho ehp ehr eo- eob eoc eoe eoh eoo eop eor ep- epb epc epe eph epo epp epr erb erc ere erh ero erp err hbb hbc hbe hbh hbo hbp hbr hcb hcc hce hch hco hcp hcr he- heb hec hee heh heo hep her hhb hhc hhe hhh hho hhp hhr hob hoc hoe hoh hoo hop hor hpb hpc hpe hph hpo hpp hpr hr- hrb hrc hre hrh hro hrp hrr ob- obb obc obe obh obo obp obr oc- ocb occ och oco ocp ocr oeb oec oee oeh oeo oep oer ohc ohe ohh oho ohp ohr oo- oob ooc ooh ooo oop oor op- opb opc ope oph opo opp opr or- orb orc ore orh oro orp orr p-p pbb pbc pbe pbo pbp pbr pcb pcc pce pch pco pcp pcr peb pec pee peh peo pep per phb phc phe pho php phr pob poc poe poh poo pop por ppb ppc ppe pph ppo ppp ppr prb prc pre prh pro prp prr rbb rbc rbe rbh rbo rbp rbr rcb rcc rce rch rco rcp rcr re- reb rec ree reh reo rep rer rh- rhb rhc rhe rhh rho rhp rhr rob roc roe roh roo rop ror rpb rpc rpe rph rpo rpp rpr rrb rrc rrh rrp rrr

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

bbbee be-er be-ro beber bebop becco beche becho beebe beech beher bepop beppe beppo berbe berec bereh berhe berob beroe beror berre bheer bhope bhore bo-bo bo-ho boboc bobr bobre bocce boche bocho bocor boece boero bohor booce booch booco booer boore borbo borce borch borec boree borer boro- boroo borre borro brece brech breer breo- breoc brere brobo broce broch broer brrrr c-cor c-p-c c-pop ccccc cebec ceber cebpb cebpe cech ceche ceco- ceere ceoce ceoor ceppo cerc- cerce cerco cerec cerer cero- ceroc cerre cerro chech cheep cheer cheho chehr cheo chepe chepo chere chero cherp chher chobe choco choop choor chope chor- chore choro co-bo co-co co-op cobbe cobre cocc- cocce cocco coceo coche coepe cohee cohob cohoe cohoo cooch cooee cooer coope coore copce copec coper coppe coppo copr-