-er -ic b-u bbb bbc bbe bbi bbk bbo bbr bbs bbt bbu bcb bcc bce bci bck bco bcr bcs bct bcu bcz be- beb bec bee bei bek beo ber bes bet beu bez bi- bib bic bie bii bik bio bir bis bit biu biz bkb bkc bke bkk bko bkr bks bkt bob boc boe boi bok boo bor bos bot bou boz brb bre bri brk bro brr brs brt bru brz bsb bsc bse bsi bsk bso bsr bss bst bsu btb btc bte bti btk bto btr bts btt btu btz bub buc bue bui buk buo bur bus but buu buz bze bzo bzr bzs bzu bzz c-- cbb cbc cbe cbi cbk cbo cbr cbs cbt cbu cbz ccb ccc cce cci cck cco ccr ccs cct ccu ccz ce- ceb cec cee cei cek ceo cer ces cet ceu cez ci- cib cic cie cii cik cio cir cis cit ciu ckb ckc cki cko cks ckt co- cob coc coe coi cok coo cor cos cot cou coz crb crc cre cri crk cro crr crs crt cru crz csb csc cse csi csk cso csr css cst csu csz ctb ctc cte cti ctk cto ctr cts ctt ctu ctz cub cuc cue cui cuk cuo cur cus cut cuu cuz cz- czc cze czk czo czt ebb ebc ebe ebi ebk ebo ebr ebs ebt ebu ec- ecb ecc ece eci eck eco ecr ecs ect ecu eeb eec eee eek eeo eer ees eet eib eic eie eii eik eio eir eis eit eiu ekb ekc eke eki eko ekr eks ekt eku eo- eob eoc eoe eoi eok eoo eor eos eot eou erb erc ere eri erk ero err ers ert eru erz es- esb esc ese esi esk eso esr ess est esu etb etc ete eti etk eto etr ets ett etu etz eu- eub euc eue eui eur eus eut eze ezo ezr ezs ezz ibb ibc ibe ibi ibk ibo ibr ibs ibt ibu ibz icb icc ice ici ick ico icr ics ict icu icz ie- iec iee iei iek ier ies iet iib iic iie iii iio iir iis iit iiu ikb ikc ike iki ikk iko ikr iks ikt iku io- iob ioc ioe ioi ioo ior ios iot iou ir- irb irc ire iri irk iro irr irs irt iru is- isb isc ise isi isk iso isr iss ist isu itb itc ite iti itk ito its itt itu itz iu- iub iuc iue iui iur ius iut iuz ize izi izo izu izz k-t k-z kbb kbc kbe kbi kbk kbo kbr kbs kbu kbz kcb kcc kce kci kck kcr kcs kct kcu ke- keb kec kee kei kek keo ker kes ket kez kib kic kie kii kik kio kir kis kit kiu kiz kkb kkc kke kki kkk kkr kks kkt kku kob koc koe koi kok koo kor kos kot kou koz krc kri krk kro krr krs krt kru ksb ksc kse ksi ksk kso ksr kss kst ksu ktb ktc kte ktk kto ktr kts ktt ktu kub kuc kue kui kuk kur kus kut kuu kzo o-i ob- obb obc obe obi obk obo obr obs obt obu oc- ocb occ oci ock oco ocr ocs oct ocu ocz oeb oec oee oei oeo oer oes oet oib oic oie oii oik oio oir ois oit oiu oiz okb okc oke oki okk oko okr oks oku oo- oob ooc ooi ook ooo oor oos oot or- orb orc ore ori ork oro orr ors ort oru orz os- osb osc ose osi osk oso osr oss ost osu ot- otb otc ote oti otk oto otr ots ott otu otz ou- ouc oue oui ouk ouo our ous out oze ozo ozs ozt ozu ozz rbb rbc rbe rbi rbk rbo rbr rbs rbt rbu rcb rcc rce rci rco rcr rcs rct rcu re- reb rec ree rei rek reo rer res ret reu rez rib ric rie rii rik rio rir ris rit riz rkb rkc rke rkk rko rks rkt rku rkz rob roc roe roi rok roo ror ros rot rou roz rrb rrc rri rrk rrr rrs rrt rru rsb rsc rse rsi rsk rso rsr rss rst rsu rtb rtc rte rti rtk rto rtr rts rtt rtu rtz rub ruc rue rui ruk ruo rur rus rut ruu ruz rzb rze rzo sbb sbc sbe sbi sbk sbo sbr sbs sbt sbu scb scc sce sci sck sco scr scs sct scu se- seb sec see sei sek seo ser ses set seu sez sib sic sie sii sik sio sir sis sit siu sk- skb skc ske ski skk sko skr sks skt sku sob soc soe soi sok soo sor sos sot sou soz sr- srb src sre sri srk sro srr srs srt ss- ssb ssc sse ssi ssk sso ssr sss sst ssu ssz stb stc ste sti stk sto str sts stt stu stz sub suc sue sui suk suo sur sus sut suu suz sze szi szr szu tbb tbc tbe tbi tbk tbo tbr tbs tbt tbu tbz tcb tcc tce tci tck tco tcr tcs tct tcu te- teb tec tee tei tek teo ter tes tet teu tez tib tic tie tii tik tio tir tis tit tiu tiz tkb tkc tke tkk tko tkr tks tkt tkz to- tob toc toe toi tok too tor tos tot tou toz trb trc tre tri trk tro trr trs trt tru trz tsb tsc tse tsi tsk tso tsr tss tst tsu ttb ttc tte tti ttk tto ttr tts ttt ttu tub tuc tue tui tuk tuo tur tus tut tuu tuz tze tzs tzu ubb ubc ube ubi ubk ubo ubr ubs ubt ubu ucb ucc uce uci uck uco ucr ucs uct ucu ueb uec uee uei uer