-er a-a a-b a-i aaa aab aad aae aaf aai aan aao aar aas aau ab- aba abb abd abe abf abi abn abo abr abs abu ad- ada adb add ade adf adi adn ado adr ads adu aea aeb aed aee aef aei aen aeo aer aes aeu af- afa afb afd afe aff afi afn afo afr afs afu ai- aia aib aid aie aif aii ain aio air ais aiu an- ana anb and ane anf ani ann ano anr ans anu aoa aob aod aoe aof aoi aon aoo aor aos aou ar- ara arb ard are arf ari arn aro arr ars aru as- asa asb asd ase asf asi asn aso asr ass asu au- aua aub aud aue auf aui aun auo aur aus b-u baa bab bad bae baf bai ban bao bar bas bau bba bbb bbd bbe bbf bbi bbn bbo bbr bbs bbu bda bdb bdd bde bdf bdi bdo bdr bds bdu be- bea beb bed bee bef bei ben beo ber bes beu bfa bfb bfd bfe bff bfi bfn bfo bfr bfs bfu bi- bia bib bid bie bif bii bin bio bir bis biu bna bnb bnd bne bnf bni bnn bno bnr bns bnu boa bob bod boe bof boi bon boo bor bos bou bra brb brd bre brf bri brn bro brr brs bru bsa bsb bsd bse bsf bsi bsn bso bsr bss bsu bua bub bud bue buf bui bun buo bur bus buu daa dab dad dae daf dai dan dao dar das dau dba dbb dbd dbe dbf dbi dbn dbo dbr dbs dbu dda ddb ddd dde ddf ddi ddn ddo ddr dds ddu de- dea deb ded dee def dei den deo der des deu dfa dfb dfd dfe dff dfi dfn dfo dfr dfs dfu di- dia dib did die dif dii din dio dir dis diu dna dnb dnd dne dnf dni dnn dno dnr dns doa dob dod doe dof doi don doo dor dos dou dra drb drd dre dri drn dro drr drs dru dsa dsb dsd dse dsf dsi dsn dso dsr dss dsu dua dub dud due duf dui dun duo dur dus eaa eab ead eae eaf eai ean eao ear eas eau eba ebb ebd ebe ebf ebi ebn ebo ebr ebs ebu ed- eda edb edd ede edf edi edn edo edr eds edu eea eeb eed eee eef een eeo eer ees ef- efa efb efd efe eff efi efo efr efs eia eib eid eie eif eii ein eio eir eis eiu en- ena enb end ene enf eni enn eno enr ens enu eo- eoa eob eod eoe eof eoi eon eoo eor eos eou era erb erd ere erf eri ern ero err ers eru es- esa esb esd ese esf esi esn eso esr ess esu eu- eua eub eud eue euf eui eun eur eus faa fab fad fae faf fai fan fao far fas fau fba fbb fbd fbe fbf fbi fbn fbo fbr fbs fbu fda fdb fdd fde fdf fdi fdn fdo fdr fds fdu fea feb fed fee fef fei fen feo fer fes feu ffa ffd ffe fff ffi ffn ffo ffr ffs ffu fia fib fid fie fif fii fin fir fis fiu fna fnb fnd fne fnf fni fnn fnr fns fnu foa fob foe fof foi fon foo for fos fou fra frb frd fre frf fri frn fro frr frs fru fsa fsb fsd fse fsf fsi fsn fso fsr fss fsu fua fub fud fue fuf fui fun fuo fur fus fuu i-d i-f ia- iaa iab iad iae iaf iai ian iao iar ias iau iba ibb ibd ibe ibf ibi ibn ibo ibr ibs ibu ida idb idd ide idf idi idn ido idr ids idu ie- iea ied iee ief iei ien ier ies ifa ifb ifd ife iff ifi ifn ifo ifr ifs ifu iia iib iid iie iif iii iin iio iir iis iiu in- ina inb ind ine inf ini inn ino inr ins inu io- ioa iob iod ioe iof ioi ion ioo ior ios iou ir- ira irb ird ire irf iri irn iro irr irs iru is- isa isb isd ise isf isi isn iso isr iss isu iu- iua iub iud iue iui iur ius n-i naa nab nad nae naf nai nan nao nar nas nau nba nbb nbd nbe nbf nbi nbn nbo nbr nbs nbu nda ndb ndd nde ndf ndi ndn ndo ndr nds ndu ne- nea neb ned nee nef nei nen neo ner nes neu nfa nfb nfd nfe nff nfi nfn nfo nfr nfs nfu nia nib nid nie nif nii nin nio nir nis niu nna nnb nne nnf nni nnn nno nns nnu no- noa nob nod noe nof noi non noo nor nos nou nra nrb nrd nre nrf nri nrn nro nrr nrs nru nsa nsb nsd nse nsf nsi nsn nso nsr nss nsu nua nub nud nue nui nun nuo nur nus nuu o-i oaa oab oad oae oaf oai oan oao oar oas oau ob- oba obb obd obe obf obi obn obo obr obs obu oda odb odd ode odf odi odn odo odr ods odu oea oeb oed oee oef oei oen oeo oer oes of- ofa ofb ofd ofe off ofi ofn ofo ofr ofs ofu oia oib oid oie oif oii oin oio oir ois oiu on- ona onb ond one onf oni onn ono onr ons onu oo- ooa oob ood oof ooi oon ooo oor oos or- ora orb ord ore orf ori orn oro orr ors oru os- osa osb osd ose osf osi osn oso osr oss osu ou- oua oud oue ouf oui oun ouo our ous ra- raa rab rad rae raf rai ran rao rar ras rau rba rbb rbd rbe rbf rbi rbn