-er a-a a-b a-i a-t aaa aab aad aae aai aan aao aap aar aas aat ab- aba abb abd abe abi abn abo abp abr abs abt ad- ada adb add ade adi adn ado adp adr ads adt aea aeb aed aee aei aen aeo aep aer aes aet ai- aia aib aid aie aii ain aio aip air ais ait an- ana anb and ane ani ann ano anp anr ans ant aoa aob aod aoe aoi aon aoo aop aor aos aot ap- apa apb apd ape api apn apo app apr aps apt ar- ara arb ard are ari arn aro arp arr ars art as- asa asb asd ase asi asn aso asp asr ass ast at- ata atb atd ate ati atn ato atp atr ats att b-p baa bab bad bae bai ban bao bap bar bas bat bba bbb bbd bbe bbi bbn bbo bbp bbr bbs bbt bda bdb bdd bde bdi bdo bdp bdr bds bdt be- bea beb bed bee bei ben beo bep ber bes bet bi- bia bib bid bie bii bin bio bip bir bis bit bna bnb bnd bne bni bnn bno bnp bnr bns bnt boa bob bod boe boi bon boo bop bor bos bot bpa bpb bpd bpe bpi bpn bpo bpp bpr bps bpt bra brb brd bre bri brn bro brp brr brs brt bsa bsb bsd bse bsi bsn bso bsp bsr bss bst bta btb btd bte bti btn bto btp btr bts btt daa dab dad dae dai dan dao dap dar das dat dba dbb dbd dbe dbi dbn dbo dbp dbr dbs dbt dda ddb ddd dde ddi ddn ddo ddp ddr dds ddt de- dea deb ded dee dei den deo dep der des det di- dia dib did die dii din dio dip dir dis dit dna dnb dnd dne dni dnn dno dnp dnr dns dnt doa dob dod doe doi don doo dop dor dos dot dpa dpb dpd dpe dpi dpn dpo dpp dpr dps dpt dra drb drd dre dri drn dro drp drr drs drt dsa dsb dsd dse dsi dsn dso dsp dsr dss dst dta dtb dtd dte dti dtn dto dtp dtr dts dtt eaa eab ead eae eai ean eao eap ear eas eat eba ebb ebd ebe ebi ebn ebo ebp ebr ebs ebt ed- eda edb edd ede edi edn edo edp edr eds edt eea eeb eed eee een eeo eep eer ees eet eia eib eid eie eii ein eio eip eir eis eit en- ena enb end ene eni enn eno enp enr ens ent eo- eoa eob eod eoe eoi eon eoo eop eor eos eot ep- epa epb epd epe epi epn epo epp epr eps ept era erb erd ere eri ern ero erp err ers ert es- esa esb esd ese esi esn eso esp esr ess est eta etb etd ete eti etn eto etp etr ets ett i-d ia- iaa iab iad iae iai ian iao iap iar ias iat iba ibb ibd ibe ibi ibn ibo ibp ibr ibs ibt ida idb idd ide idi idn ido idp idr ids idt ie- iea ied iee iei ien iep ier ies iet iia iib iid iie iii iin iio iip iir iis iit in- ina inb ind ine ini inn ino inp inr ins int io- ioa iob iod ioe ioi ion ioo iop ior ios iot ipa ipb ipd ipe ipi ipn ipo ipp ipr ips ipt ir- ira irb ird ire iri irn iro irp irr irs irt is- isa isb isd ise isi isn iso isp isr iss ist ita itb itd ite iti itn ito itp its itt n-i naa nab nad nae nai nan nao nap nar nas nat nba nbb nbd nbe nbi nbn nbo nbp nbr nbs nbt nda ndb ndd nde ndi ndn ndo ndp ndr nds ndt ne- nea neb ned nee nei nen neo nep ner nes net nia nib nid nie nii nin nio nip nir nis nit nna nnb nne nni nnn nno nnp nns nnt no- noa nob nod noe noi non noo nop nor nos not npa npb npd npe npi npn npo npp npr nps npt nra nrb nrd nre nri nrn nro nrp nrr nrs nrt nsa nsb nsd nse nsi nsn nso nsp nsr nss nst nta ntb ntd nte nti ntn nto ntp ntr nts ntt o-i oaa oab oad oae oai oan oao oap oar oas oat ob- oba obb obd obe obi obn obo obp obr obs obt oda odb odd ode odi odn odo odp odr ods odt oea oeb oed oee oei oen oeo oep oer oes oet oia oib oid oie oii oin oio oip oir ois oit on- ona onb ond one oni onn ono onp onr ons ont oo- ooa oob ood ooi oon ooo oop oor oos oot op- opa opb opd ope opi opn opo opp opr ops opt or- ora orb ord ore ori orn oro orp orr ors ort os- osa osb osd ose osi osn oso osp osr oss ost ot- ota otb otd ote oti otn oto otp otr ots ott p-p paa pab pad pae pai pan pao pap par pas pat pba pbb pbd pbe pbi pbn pbo pbp pbr pbs pbt pda pdb pdd pde pdi pdn pdo pdp pdr pds pdt pea peb ped pee pei pen peo pep per pes pet pia pib pid pie pii pin pio pip pir pis pit pn- pna pnb pnd pne pni pnn pno pnp pnr pns pnt poa pob pod poe poi pon poo pop por pos pot ppa ppb ppd ppe ppi ppn ppo ppp ppr pps ppt pra prb prd pre pri prn pro prp prr prs prt ps- psa psb psd pse psi psn pso psp psr pss pst pt- pta ptb ptd pte pti ptn