-er a-a a-b a-i a-t aaa aab aad aae aaf aai aan aao aar aat ab- aba abb abd abe abf abi abn abo abr abt ad- ada adb add ade adf adi adn ado adr adt aea aeb aed aee aef aei aen aeo aer aet af- afa afb afd afe aff afi afn afo afr aft ai- aia aib aid aie aif aii ain aio air ait an- ana anb and ane anf ani ann ano anr ant aoa aob aod aoe aof aoi aon aoo aor aot ar- ara arb ard are arf ari arn aro arr art at- ata atb atd ate atf ati atn ato atr att baa bab bad bae baf bai ban bao bar bat bba bbb bbd bbe bbf bbi bbn bbo bbr bbt bda bdb bdd bde bdf bdi bdo bdr bdt be- bea beb bed bee bef bei ben beo ber bet bfa bfb bfd bfe bff bfi bfn bfo bfr bft bi- bia bib bid bie bif bii bin bio bir bit bna bnb bnd bne bnf bni bnn bno bnr bnt boa bob bod boe bof boi bon boo bor bot bra brb brd bre brf bri brn bro brr brt bta btb btd bte btf bti btn bto btr btt daa dab dad dae daf dai dan dao dar dat dba dbb dbd dbe dbf dbi dbn dbo dbr dbt dda ddb ddd dde ddf ddi ddn ddo ddr ddt de- dea deb ded dee def dei den deo der det dfa dfb dfd dfe dff dfi dfn dfo dfr dft di- dia dib did die dif dii din dio dir dit dna dnb dnd dne dnf dni dnn dno dnr dnt doa dob dod doe dof doi don doo dor dot dra drb drd dre dri drn dro drr drt dta dtb dtd dte dtf dti dtn dto dtr dtt eaa eab ead eae eaf eai ean eao ear eat eba ebb ebd ebe ebf ebi ebn ebo ebr ebt ed- eda edb edd ede edf edi edn edo edr edt eea eeb eed eee eef een eeo eer eet ef- efa efb efd efe eff efi efo efr eft eia eib eid eie eif eii ein eio eir eit en- ena enb end ene enf eni enn eno enr ent eo- eoa eob eod eoe eof eoi eon eoo eor eot era erb erd ere erf eri ern ero err ert eta etb etd ete etf eti etn eto etr ett faa fab fad fae faf fai fan fao far fat fba fbb fbd fbe fbf fbi fbn fbo fbr fbt fda fdb fdd fde fdf fdi fdn fdo fdr fdt fea feb fed fee fef fei fen feo fer fet ffa ffd ffe fff ffi ffn ffo ffr fft fia fib fid fie fif fii fin fir fit fna fnb fnd fne fnf fni fnn fnr fnt foa fob foe fof foi fon foo for fot fra frb frd fre frf fri frn fro frr frt fta ftb ftd fte ftf fti ftn fto ftr ftt i-d i-f ia- iaa iab iad iae iaf iai ian iao iar iat iba ibb ibd ibe ibf ibi ibn ibo ibr ibt ida idb idd ide idf idi idn ido idr idt ie- iea ied iee ief iei ien ier iet ifa ifb ifd ife iff ifi ifn ifo ifr ift iia iib iid iie iif iii iin iio iir iit in- ina inb ind ine inf ini inn ino inr int io- ioa iob iod ioe iof ioi ion ioo ior iot ir- ira irb ird ire irf iri irn iro irr irt ita itb itd ite itf iti itn ito itt n-i naa nab nad nae naf nai nan nao nar nat nba nbb nbd nbe nbf nbi nbn nbo nbr nbt nda ndb ndd nde ndf ndi ndn ndo ndr ndt ne- nea neb ned nee nef nei nen neo ner net nfa nfb nfd nfe nff nfi nfn nfo nfr nft nia nib nid nie nif nii nin nio nir nit nna nnb nne nnf nni nnn nno nnt no- noa nob nod noe nof noi non noo nor not nra nrb nrd nre nrf nri nrn nro nrr nrt nta ntb ntd nte ntf nti ntn nto ntr ntt o-i oaa oab oad oae oaf oai oan oao oar oat ob- oba obb obd obe obf obi obn obo obr obt oda odb odd ode odf odi odn odo odr odt oea oeb oed oee oef oei oen oeo oer oet of- ofa ofb ofd ofe off ofi ofn ofo ofr oft oia oib oid oie oif oii oin oio oir oit on- ona onb ond one onf oni onn ono onr ont oo- ooa oob ood oof ooi oon ooo oor oot or- ora orb ord ore orf ori orn oro orr ort ot- ota otb otd ote otf oti otn oto otr ott ra- raa rab rad rae raf rai ran rao rar rat rba rbb rbd rbe rbf rbi rbn rbo rbr rbt rda rdb rdd rde rdf rdi rdn rdo rdr rdt re- rea reb red ree ref rei ren reo rer ret rfa rfb rfd rfe rff rfi rfn rfo rfr rft ria rib rid rie rif rii rin rio rir rit rna rnb rnd rni rnn rno rnr rnt roa rob rod roe rof roi ron roo ror rot rra rrb rrd rrf rri rrn rrr rrt rta rtb rtd rte rtf rti rtn rto rtr rtt taa tab tad tae taf tai tan tao tar tat tba tbb tbd tbe tbf tbi tbn tbo tbr tbt tda tdb tdd tde tdf tdi tdn tdo tdr tdt te- tea teb ted tee tef tei ten teo ter tet tfa tfb tfd tfe tff tfi tfn tfo tfr tft tia tib tid tie tif tii tin tio tir tit tna tnb tnd tne tnf tni tnn tno tnr tnt to- toa tob tod toe tof toi ton