-er -th b-u bbb bbc bbe bbh bbk bbo bbr bbs bbt bbu bcb bcc bce bch bck bco bcr bcs bct bcu be- beb bec bee beh bek beo ber bes bet beu bhb bhc bhe bhh bhk bho bhr bhs bht bhu bkb bkc bke bkk bko bkr bks bkt bob boc boe boh bok boo bor bos bot bou brb bre brh brk bro brr brs brt bru bsb bsc bse bsh bsk bso bsr bss bst bsu btb btc bte bth btk bto btr bts btt btu bub buc bue buh buk buo bur bus but buu c-- cbb cbc cbe cbh cbk cbo cbr cbs cbt cbu ccb ccc cce cch cck cco ccr ccs cct ccu ce- ceb cec cee ceh cek ceo cer ces cet ceu ch- chb chc che chh chk cho chr chs cht chu ckb ckc ckh cko cks ckt co- cob coc coe coh cok coo cor cos cot cou crb crc cre crh crk cro crr crs crt cru csb csc cse csh csk cso csr css cst csu ctb ctc cte cth ctk cto ctr cts ctt ctu cub cuc cue cuh cuk cuo cur cus cut cuu ebb ebc ebe ebh ebk ebo ebr ebs ebt ebu ec- ecb ecc ece ech eck eco ecr ecs ect ecu eeb eec eee eek eeo eer ees eet ehb ehc ehe ehh eho ehr ehs eht ehu ekb ekc eke ekh eko ekr eks ekt eku eo- eob eoc eoe eoh eok eoo eor eos eot eou erb erc ere erh erk ero err ers ert eru es- esb esc ese esh esk eso esr ess est esu etb etc ete eth etk eto etr ets ett etu eu- eub euc eue eur eus eut hbb hbc hbe hbh hbk hbo hbr hbs hbt hbu hcb hcc hce hch hck hco hcr hcs hct he- heb hec hee heh hek heo her hes het heu hhb hhc hhe hhh hhk hho hhr hhs hht hhu hkb hkh hkk hko hkr hks hkt hku hob hoc hoe hoh hok hoo hor hos hot hou hr- hrb hrc hre hrh hrk hro hrr hrs hrt hru hsb hsc hse hsh hsk hsr hss hst hsu htb htc hte hth htk hto htr hts htt hub huc hue huh huk huo hur hus hut huu k-t kbb kbc kbe kbh kbk kbo kbr kbs kbu kcb kcc kce kch kck kcr kcs kct kcu ke- keb kec kee keh kek keo ker kes ket khe khh khk kho khr khs khu kkb kkc kke kkh kkk kkr kks kkt kku kob koc koe koh kok koo kor kos kot kou krc krk kro krr krs krt kru ksb ksc kse ksh ksk kso ksr kss kst ksu ktb ktc kte kth ktk kto ktr kts ktt ktu kub kuc kue kuh kuk kur kus kut kuu ob- obb obc obe obh obk obo obr obs obt obu oc- ocb occ och ock oco ocr ocs oct ocu oeb oec oee oeh oeo oer oes oet ohc ohe ohh oho ohr ohs oht ohu okb okc oke okk oko okr oks oku oo- oob ooc ooh ook ooo oor oos oot or- orb orc ore orh ork oro orr ors ort oru os- osb osc ose osh osk oso osr oss ost osu ot- otb otc ote oth otk oto otr ots ott otu ou- ouc oue ouh ouk ouo our ous out rbb rbc rbe rbh rbk rbo rbr rbs rbt rbu rcb rcc rce rch rco rcr rcs rct rcu re- reb rec ree reh rek reo rer res ret reu rh- rhb rhc rhe rhh rho rhr rhs rht rhu rkb rkc rke rkk rko rks rkt rku rob roc roe roh rok roo ror ros rot rou rrb rrc rrh rrk rrr rrs rrt rru rsb rsc rse rsh rsk rso rsr rss rst rsu rtb rtc rte rtk rto rtr rts rtt rtu rub ruc rue ruh ruk ruo rur rus rut ruu sbb sbc sbe sbh sbk sbo sbr sbs sbt sbu scb scc sce sch sck sco scr scs sct scu se- seb sec see seh sek seo ser ses set seu sh- shb shc she shh shk sho shr shs sht shu sk- skb skc ske skh skk sko skr sks skt sku sob soc soe soh sok soo sor sos sot sou sr- srb src sre srh srk sro srr srs srt ss- ssb ssc sse ssh ssk sso ssr sss sst ssu stb stc ste sth stk sto str sts stt stu sub suc sue suh suk suo sur sus sut suu tbb tbc tbe tbh tbk tbo tbr tbs tbt tbu tcb tcc tce tch tck tco tcr tcs tct tcu te- teb tec tee teh tek teo ter tes tet teu th- thb thc the thh thk tho thr ths tht thu tkb tkc tke tkk tko tkr tks tkt to- tob toc toe toh tok too tor tos tot tou trb trc tre trh trk tro trr trs trt tru tsb tsc tse tsh tsk tso tsr tss tst tsu ttb ttc tte tth ttk tto ttr tts ttt ttu tub tuc tue tuh tuk tuo tur tus tut tuu ubb ubc ube ubh ubk ubo ubr ubs ubt ubu ucb ucc uce uch uck uco ucr ucs uct ucu ueb uec uee ueh uer ues uet uhb uhc uhe uhh uho uhr uhs uht uhu ukb ukc uke ukk ukr uku uob uoc uoe uok uoo uor uos uot ur- urb urc ure urk uro urr urs urt uru usb usc use ush usk uso usr uss ust usu utb utc ute uth utk uto utr uts utt utu uuc uue uur uus uut uuu

-hou -ose -ous bbbb bbbs bbch bbeb bbet bbhs bbrc bcbc bcbs bccc bccs bcec bcer bces bcet bche bchs bcor bcos bcrs bcru bcsc bcss bctc bcts bcuc bebb bebe bebo bech