-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aao aar aas aat aau aav ab- aba abb abc abe abi abo abr abs abt abu abv ac- aca acb acc ace aci aco acr acs act acu acv aea aeb aec aee aei aeo aer aes aet aeu aev ai- aia aib aic aie aii aio air ais ait aiu aiv aoa aob aoc aoe aoi aoo aor aos aot aou aov ar- ara arb arc are ari aro arr ars art aru arv as- asa asb asc ase asi aso asr ass ast asu asv at- ata atb atc ate ati ato atr ats att atu atv au- aua aub auc aue aui auo aur aus aut auv av- ava avb avc ave avi avo avr avs avt avu b-u baa bab bac bae bai bao bar bas bat bau bav bba bbb bbc bbe bbi bbo bbr bbs bbt bbu bca bcb bcc bce bci bco bcr bcs bct bcu bcv be- bea beb bec bee bei beo ber bes bet beu bev bi- bia bib bic bie bii bio bir bis bit biu biv boa bob boc boe boi boo bor bos bot bou bov bra brb bre bri bro brr brs brt bru brv bsa bsb bsc bse bsi bso bsr bss bst bsu bsv bta btb btc bte bti bto btr bts btt btu btv bua bub buc bue bui buo bur bus but buu bva bvb bvc bve bvi bvo bvr bvs bvt bvu bvv c-- caa cab cac cae cai cao car cas cat cau cav cba cbb cbc cbe cbi cbo cbr cbs cbt cbu cbv cca ccb ccc cce cci cco ccr ccs cct ccu ccv ce- cea ceb cec cee cei ceo cer ces cet ceu cev ci- cia cib cic cie cii cio cir cis cit ciu civ co- coa cob coc coe coi coo cor cos cot cou cov cra crb crc cre cri cro crr crs crt cru crv csa csb csc cse csi cso csr css cst csu csv cta ctb ctc cte cti cto ctr cts ctt ctu ctv cua cub cuc cue cui cuo cur cus cut cuu cuv cva cvb cvc cve cvi cvo cvr cvs cvt cvu cvv eaa eab eac eae eai eao ear eas eat eau eav eba ebb ebc ebe ebi ebo ebr ebs ebt ebu ebv ec- eca ecb ecc ece eci eco ecr ecs ect ecu ecv eea eeb eec eee eeo eer ees eet eev eia eib eic eie eii eio eir eis eit eiu eiv eo- eoa eob eoc eoe eoi eoo eor eos eot eou era erb erc ere eri ero err ers ert eru erv es- esa esb esc ese esi eso esr ess est esu esv eta etb etc ete eti eto etr ets ett etu etv eu- eua eub euc eue eui eur eus eut euv eva evb evc eve evi evo evr evs evt evv i-v ia- iaa iab iac iae iai iao iar ias iat iau iav iba ibb ibc ibe ibi ibo ibr ibs ibt ibu ibv ica icb icc ice ici ico icr ics ict icu icv ie- iea iec iee iei ier ies iet iev iia iib iic iie iii iio iir iis iit iiu io- ioa iob ioc ioe ioi ioo ior ios iot iou iov ir- ira irb irc ire iri iro irr irs irt iru irv is- isa isb isc ise isi iso isr iss ist isu isv ita itb itc ite iti ito its itt itu itv iu- iua iub iuc iue iui iur ius iut iva ivb ivc ive ivi ivo ivr ivs ivt ivu ivv o-i oaa oab oac oae oai oao oar oas oat oau oav ob- oba obb obc obe obi obo obr obs obt obu obv oc- oca ocb occ oci oco ocr ocs oct ocu ocv oea oeb oec oee oei oeo oer oes oet oia oib oic oie oii oio oir ois oit oiu oiv oo- ooa oob ooc ooi ooo oor oos oot oov or- ora orb orc ore ori oro orr ors ort oru orv os- osa osb osc ose osi oso osr oss ost osu osv ot- ota otb otc ote oti oto otr ots ott otu otv ou- oua ouc oue oui ouo our ous out ov- ova ovb ovc ove ovi ovo ovs ovv ra- raa rab rac rae rai rao rar ras rat rau rav rba rbb rbc rbe rbi rbo rbr rbs rbt rbu rca rcb rcc rce rci rco rcr rcs rct rcu rcv re- rea reb rec ree rei reo rer res ret reu rev ria rib ric rie rii rio rir ris rit riv roa rob roc roe roi roo ror ros rot rou rov rra rrb rrc rri rrr rrs rrt rru rsa rsb rsc rse rsi rso rsr rss rst rsu rsv rta rtb rtc rte rti rto rtr rts rtt rtu rtv rua rub ruc rue rui ruo rur rus rut ruu ruv rva rvb rvc rve rvi rvo rvr rvs rvt rvu rvv saa sab sac sae sai sao sar sas sat sau sav sba sbb sbc sbe sbi sbo sbr sbs sbt sbu sbv sca scb scc sce sci sco scr scs sct scu scv se- sea seb sec see sei seo ser ses set seu sev sia sib sic sie sii sio sir sis sit siu siv soa sob soc soe soi soo sor sos sot sou sov sr- sra srb src sre sri sro srr srs srt srv ss- ssa ssb ssc sse ssi sso ssr sss sst ssu ssv sta stb stc ste sti sto str sts stt stu stv sua sub suc sue sui suo sur sus sut suu suv sva svb svc sve svi svo svr svs svt svu svv taa tab tac tae tai tao tar tas tat tau tav tba tbb tbc tbe tbi tbo tbr tbs tbt tbu