-er b-u bbb bbc bbe bbh bbo bbr bbu bcb bcc bce bch bco bcr bcu be- beb bec bee beh beo ber beu bhb bhc bhe bhh bho bhr bhu bob boc boe boh boo bor bou brb bre brh bro brr bru bub buc bue buh buo bur buu c-- cbb cbc cbe cbh cbo cbr cbu ccb ccc cce cch cco ccr ccu ce- ceb cec cee ceh ceo cer ceu ch- chb chc che chh cho chr chu co- cob coc coe coh coo cor cou crb crc cre crh cro crr cru cub cuc cue cuh cuo cur cuu ebb ebc ebe ebh ebo ebr ebu ec- ecb ecc ece ech eco ecr ecu eeb eec eee eeo eer ehb ehc ehe ehh eho ehr ehu eo- eob eoc eoe eoh eoo eor eou erb erc ere erh ero err eru eu- eub euc eue eur hbb hbc hbe hbh hbo hbr hbu hcb hcc hce hch hco hcr he- heb hec hee heh heo her heu hhb hhc hhe hhh hho hhr hhu hob hoc hoe hoh hoo hor hou hr- hrb hrc hre hrh hro hrr hru hub huc hue huh huo hur huu ob- obb obc obe obh obo obr obu oc- ocb occ och oco ocr ocu oeb oec oee oeh oeo oer ohc ohe ohh oho ohr ohu oo- oob ooc ooh ooo oor or- orb orc ore orh oro orr oru ou- ouc oue ouh ouo our rbb rbc rbe rbh rbo rbr rbu rcb rcc rce rch rco rcr rcu re- reb rec ree reh reo rer reu rh- rhb rhc rhe rhh rho rhr rhu rob roc roe roh roo ror rou rrb rrc rrh rrr rru rub ruc rue ruh ruo rur ruu ubb ubc ube ubh ubo ubr ubu ucb ucc uce uch uco ucr ucu ueb uec uee ueh uer uhb uhc uhe uhh uho uhr uhu uob uoc uoe uoo uor ur- urb urc ure uro urr uru uuc uue uur uuu

-hou bbbb bbch bbeb bbrc bcbc bccc bcec bcer bche bcor bcru bcuc bebb bebe bebo bech becu beeb beer behr beo- beor berc bere bero berr beru beur bhcc bher bhor bhur bhuu bobb bobe bobo bobu boce boch boco bocu boec boee boeo boer boho bohr bohu boob booc booe booh boor bor- bore borh boro borr boru boue bouh bour brcb brce breb brec bree breo brer brob broc broe broh broo bror brou brrr bruc brue bruh bubb bube bubo bubu bucc buce buch buco bucu buer bueu buhe buho buhr bur- burb bure burh buro burr buru c-bo cbbc cbcc cbce cbcr cbcu cbec cbee cber cbre cbrh ccbc cccb cccc cccu ccee cche cchr ccob ccoc ccrc ccre ccuc cebu cec- cece ceco ceeb ceec ceor ceou cer- cerc cere cero chce chch cheb chec chee cheh cher cheu choc choh choo chor chou chrb chrc chro chrr chub chur cobb cobe cobh cobo cobu coce coch coco cocu coho coob cooh cor- corb corc core coro corr coub coue cour crbc crbu crcc crce crcr cre- creb crec cree creh creo creu crob croc croe croh croo cror crub crue cub- cubb cube cucc cuce cuer curb cure curo curr ebbc ebbo ebbr ebcc eber eboe eboo ebor ebro ebru ebur ecbc ecbe eccb eccc ecce ecco eche echo eco- ecou ecrc ecrr ecru eeee eeoc eerc eero ehcc eheh eher eheu ehre eore erbb erbe ercc erce erch ereb erec erer erhc erhu erob eroc eroe eroo errc erre erro erub eruc eruh erur eubc euch euer eur- eurc eure euro hboc hcbc hccb hccc hcch hebb hebe hebo hebr hech heeb heer hehe heho heor heou herb herc here hero herr heru heue heur hhhh hobe hobo hoce hoch hocr hoer hohe hoho hooe hoor horc hore horo horr houe hour hree hrob hrrc hubb hube hubo huch hucu huer huhu huor hure huro hurr huru huub o-eo obbo obec ober oboe obor obre obrh obro obuh ocbc occc oce ocee oche ocre ocro ocrr ocur oec- oecc oeec oere ohbe ohcc ohee oher ohho ohob ohoh ohre oobe oocr ooer ooho oooh oooo oore orbb orbe orbo orbu orce orch orco ore- oreb orec oreh oreo orer orhe oro- oroe oror orro orub oucc ouch ouer our- oure ouro ouu- rbbb rbbr rboh rcbc rcbo rccb rccc rchb rebb rebe rebo rebu recc rece rech recr recu reeb rehb rehe reou rere rero reru reue reuu rhce rheb rhee rheo rhob rhoc rhoh rhue rob- robb robe robo robu rocc roce roch roco roer rohe rohr rohu roob roor rorc rore roro roru roub roue rouh rrrr rubb rube rubu ruce ruch ruer ruhe ruhh ruhr rurc rure ruro ruru ubbe ubbo uber uboc ucbc uche ucho ucrc uher uhoh uhuh uocc uor- uore urbe urch ure- ureh urho uro- uroo urre urrh urur uuoc uuuu

bbbee be-er be-ro beber becco beche becho becue beebe beech beher behue beour berbe bercu berec bereh berhe berob beroe beror berre berru beuch beuer beure bheer bhore bhour bo-bo bo-ho boboc bobr bobre bocce boche bocho bocor boece boero boeur bohor booce booch booco booer boore booru borbo borce borch borec boree borer boro- boroo borou borre borro bouce bouch bouee bouer boure brebu brece brech breer breo- breoc brere breu- brobo broce broch broer broue brrrr bruce bruch bruer bubbe buber bucco buceo bucho buchu bucur buoch buoho burch burcu bureh buroo burro burru buruc c-cor ccccc cebec ceber cech ceche ceco- ceere ceoce ceoor cerbu cerc- cerce cerco cerec cerer cero- ceroc cerou cerre cerro chech cheer cheho chehr cheo chere chero cheru cheue chher chobe choco choor chor- chore choro choue chubb chueh chur- chure churr churu co-bo co-co cobbe cobre cobue cocc- cocce cocco coceo coche cocur coeur cohee cohob cohoe cohoo cohue cooch cooee cooer coore corbe corbo corbu corce core- coree corer coreu coro- corre couch couco couer