-er -ic -th b-u bbb bbc bbe bbh bbi bbk bbn bbo bbr bbs bbt bbu bcb bcc bce bch bci bck bcn bco bcr bcs bct bcu be- beb bec bee beh bei bek ben beo ber bes bet beu bhb bhc bhe bhh bhi bhk bho bhr bhs bht bhu bi- bib bic bie bih bii bik bin bio bir bis bit biu bkb bkc bke bkk bkn bko bkr bks bkt bnb bnc bne bni bnk bnn bno bnr bns bnt bnu bob boc boe boh boi bok bon boo bor bos bot bou brb bre brh bri brk brn bro brr brs brt bru bsb bsc bse bsh bsi bsk bsn bso bsr bss bst bsu btb btc bte bth bti btk btn bto btr bts btt btu bub buc bue buh bui buk bun buo bur bus but buu c-- cbb cbc cbe cbh cbi cbk cbn cbo cbr cbs cbt cbu ccb ccc cce cch cci cck ccn cco ccr ccs cct ccu ce- ceb cec cee ceh cei cek cen ceo cer ces cet ceu ch- chb chc che chh chi chk chn cho chr chs cht chu ci- cib cic cie cih cii cik cin cio cir cis cit ciu ckb ckc ckh cki cko cks ckt cn- cnb cnc cne cnh cni cnn cno cnr cns cnt cnu co- cob coc coe coh coi cok con coo cor cos cot cou crb crc cre crh cri crk crn cro crr crs crt cru csb csc cse csh csi csk csn cso csr css cst csu ctb ctc cte cth cti ctk ctn cto ctr cts ctt ctu cub cuc cue cuh cui cuk cun cuo cur cus cut cuu ebb ebc ebe ebh ebi ebk ebn ebo ebr ebs ebt ebu ec- ecb ecc ece ech eci eck ecn eco ecr ecs ect ecu eeb eec eee eek een eeo eer ees eet ehb ehc ehe ehh ehi ehn eho ehr ehs eht ehu eib eic eie eii eik ein eio eir eis eit eiu ekb ekc eke ekh eki eko ekr eks ekt eku en- enb enc ene enh eni enk enn eno enr ens ent enu eo- eob eoc eoe eoh eoi eok eon eoo eor eos eot eou erb erc ere erh eri erk ern ero err ers ert eru es- esb esc ese esh esi esk esn eso esr ess est esu etb etc ete eth eti etk etn eto etr ets ett etu eu- eub euc eue eui eun eur eus eut h-i hbb hbc hbe hbh hbi hbk hbn hbo hbr hbs hbt hbu hcb hcc hce hch hci hck hcn hco hcr hcs hct he- heb hec hee heh hei hek hen heo her hes het heu hhb hhc hhe hhh hhi hhk hhn hho hhr hhs hht hhu hib hic hie hih hii hik hin hio hir his hit hiu hkb hkh hki hkk hkn hko hkr hks hkt hku hnb hnc hne hnh hnk hnn hno hns hnt hnu hob hoc hoe hoh hoi hok hon hoo hor hos hot hou hr- hrb hrc hre hrh hri hrk hrn hro hrr hrs hrt hru hsb hsc hse hsh hsi hsk hsn hsr hss hst hsu htb htc hte hth hti htk htn hto htr hts htt hub huc hue huh hui huk hun huo hur hus hut huu ibb ibc ibe ibh ibi ibk ibn ibo ibr ibs ibt ibu icb icc ice ich ici ick icn ico icr ics ict icu ie- iec iee iei iek ien ier ies iet ihb ihc ihe ihh ihi ihk ihn iho ihr ihs iht ihu iib iic iie iih iii iin iio iir iis iit iiu ikb ikc ike iki ikk iko ikr iks ikt iku in- inb inc ine inh ini ink inn ino inr ins int inu io- iob ioc ioe ioh ioi ion ioo ior ios iot iou ir- irb irc ire iri irk irn iro irr irs irt iru is- isb isc ise ish isi isk isn iso isr iss ist isu itb itc ite ith iti itk itn ito its itt itu iu- iub iuc iue iui iur ius iut k-t kbb kbc kbe kbh kbi kbk kbn kbo kbr kbs kbu kcb kcc kce kch kci kck kcn kcr kcs kct kcu ke- keb kec kee keh kei kek ken keo ker kes ket khe khh khi khk khn kho khr khs khu kib kic kie kih kii kik kin kio kir kis kit kiu kkb kkc kke kkh kki kkk kkn kkr kks kkt kku kn- knc kne kni knk knn kno knr knt knu kob koc koe koh koi kok kon koo kor kos kot kou krc kri krk krn kro krr krs krt kru ksb ksc kse ksh ksi ksk ksn kso ksr kss kst ksu ktb ktc kte kth ktk ktn kto ktr kts ktt ktu kub kuc kue kuh kui kuk kun kur kus kut kuu n-i nbb nbc nbe nbi nbk nbn nbo nbr nbs nbt nbu ncb ncc nce nch nci nck ncn nco ncr ncs nct ncu ne- neb nec nee neh nei nek nen neo ner nes net neu nhb nhc nhe nhh nhi nhk nhn nhr nhs nht nhu nib nic nie nih nii nik nin nio nir nis nit niu nkc nke nki nkk nkn nko nkr nks nkt nku nnb nnc nne nnh nni nnk nnn nno nns nnt nnu no- nob noc noe noh noi nok non noo nor nos not nou nrb nrc nre nri nrk nrn nro nrr nrs nrt nru nsb nsc nse nsh nsi nsk nsn nso nsr nss nst nsu ntb ntc nte nth nti ntk ntn nto ntr nts ntt ntu nub nuc nue nuh nui nuk nun nuo nur nus nut nuu o-i ob- obb obc obe obh obi obk obn obo obr obs obt obu oc- ocb occ och oci ock ocn oco ocr ocs oct ocu