-er -up b-p b-u bbb bbc bbe bbh bbo bbp bbr bbu bcb bcc bce bch bco bcp bcr bcu be- beb bec bee beh beo bep ber beu bhb bhc bhe bhh bho bhp bhr bhu bob boc boe boh boo bop bor bou bpb bpc bpe bph bpo bpp bpr bpu brb bre brh bro brp brr bru bub buc bue buh buo bup bur buu c-- cbb cbc cbe cbh cbo cbp cbr cbu ccb ccc cce cch cco ccp ccr ccu ce- ceb cec cee ceh ceo cep cer ceu ch- chb chc che chh cho chp chr chu co- cob coc coe coh coo cop cor cou cpb cpc cpe cph cpo cpp cpr cpu crb crc cre crh cro crp crr cru cub cuc cue cuh cuo cup cur cuu ebb ebc ebe ebh ebo ebp ebr ebu ec- ecb ecc ece ech eco ecr ecu eeb eec eee eeo eep eer ehb ehc ehe ehh eho ehp ehr ehu eo- eob eoc eoe eoh eoo eop eor eou ep- epb epc epe eph epo epp epr epu erb erc ere erh ero erp err eru eu- eub euc eue eup eur hbb hbc hbe hbh hbo hbp hbr hbu hcb hcc hce hch hco hcp hcr he- heb hec hee heh heo hep her heu hhb hhc hhe hhh hho hhp hhr hhu hob hoc hoe hoh hoo hop hor hou hpb hpc hpe hph hpo hpp hpr hpu hr- hrb hrc hre hrh hro hrp hrr hru hub huc hue huh huo hup hur huu ob- obb obc obe obh obo obp obr obu oc- ocb occ och oco ocp ocr ocu oeb oec oee oeh oeo oep oer ohc ohe ohh oho ohp ohr ohu oo- oob ooc ooh ooo oop oor op- opb opc ope oph opo opp opr or- orb orc ore orh oro orp orr oru ou- ouc oue ouh ouo oup our p-p pbb pbc pbe pbo pbp pbr pbu pcb pcc pce pch pco pcp pcr pcu peb pec pee peh peo pep per peu phb phc phe pho php phr phu pob poc poe poh poo pop por pou ppb ppc ppe pph ppo ppp ppr ppu prb prc pre prh pro prp prr pru pub puc pue puh pup pur puu rbb rbc rbe rbh rbo rbp rbr rbu rcb rcc rce rch rco rcp rcr rcu re- reb rec ree reh reo rep rer reu rh- rhb rhc rhe rhh rho rhp rhr rhu rob roc roe roh roo rop ror rou rpb rpc rpe rph rpo rpp rpr rpu rrb rrc rrh rrp rrr rru rub ruc rue ruh ruo rup rur ruu ubb ubc ube ubh ubo ubp ubr ubu ucb ucc uce uch uco ucp ucr ucu ueb uec uee ueh uep uer uhb uhc uhe uhh uho uhp uhr uhu uob uoc uoe uoo uop uor up- upb upc upe uph upo upp upr upu ur- urb urc ure uro urp urr uru uuc uue uur uuu

-hou bbbb bbch bbeb bbpr bbrc bcbc bcbp bccc bcec bcer bche bcor bcpp bcru bcuc bcup bebb bebe bebo bech becu beeb beep beer behr beo- beor bepo berc bere bero berr beru beur bhcc bher bhor bhur bhuu bobb bobe bobo bobu boce boch boco bocu boec boee boeo boep boer boho bohr bohu boob booc booe booh boop boor bope bopp bor- bore borh boro borr boru boue bouh boup bour bpcp bphc bpoe bprc brcb brce breb brec bree breo brep brer brob broc broe broh broo bror brou brrr bruc brue bruh brup bubb bube bubo bubu bucc buce buch buco bucu buer bueu buhe buho buhr bupc bur- burb bure burh buro burp burr buru c-bo cbbc cbcc cbce cbcp cbcr cbcu cbec cbee cber cbpc cbpp cbre cbrh ccbc cccb cccc cccp cccu ccee cche cchp cchr ccob ccoc ccpe ccpp ccpr ccrc ccre ccrp ccuc ccup cebp cebu cec- cece ceco cecp ceeb ceec ceop ceor ceou cepc cepe ceph cepo cepp cepr cer- cerc cere cero cerp chbp chce chch chcp cheb chec chee cheh chep cher cheu choc choh choo chop chor chou chpp chpr chrb chrc chro chrp chrr chub chur cobb cobe cobh cobo cobu coce coch coco cocp cocu coep coho coob cooh coop cope coph copo copp copr cor- corb corc core coro corp corr coub coue coup cour cpbc cpce cpcu cpeb cpep cper cpre crbc crbu crcc crce crcr cre- creb crec cree creh creo crep creu crob croc croe croh croo crop cror crpc crub crue crup cub- cubb cube cucc cuce cuer cupe cupo cupp cupr curb cure curo curr ebbc ebbo ebbr ebcc eber eboe eboo ebor ebpo ebro ebru ebur ecbc ecbe eccb eccc ecce ecco eche echo eco- ecop ecou ecpp ecrc ecrr ecru eeee eeoc eerc eero ehcc eheh eher eheu ehre eore epcc epch epec epee eper eph- epoc epor eppc eppo eppp eprb epro eprp epub erbb erbe ercc erce erch ercp ereb erec erer erhc erhu erob eroc eroe eroo erpe errc erre erro erub eruc eruh erur eubc euch euer eur- eurc eure euro hboc hcbc hccb hccc hcch hcpc hcrp hebb hebe hebo hebr hech heeb heep heer hehe heho heor heou hepc hepe hepp hepu herb herc here hero herp herr heru heue heur hhhh hhpc hobe hobo hoce hoch hocr hoer hohe hoho hooe hoop hoor hope hopo hopp horc hore horo horr houe houp hour hpcc hppe hpue hree hrob hrpc hrpp hrrc hubb hube hubo huch hucu huer huhu huor hupe hupp hure huro hurr huru huub o-eo obbo obec ober oboe obor obre obrh obro obuh ocbc occc oce ocee oche ocpp ocre ocro ocrr ocur 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 orbu orce orch orco ore- oreb