-er a-a a-b a-i a-t aaa aab aad aae aaf aag aai aan aao aar aat ab- aba abb abd abe abf abg abi abn abo abr abt ad- ada adb add ade adf adg adi adn ado adr adt aea aeb aed aee aef aeg aei aen aeo aer aet af- afa afb afd afe aff afg afi afn afo afr aft ag- aga agb agd age agf agg agi agn ago agr agt ai- aia aib aid aie aif aig aii ain aio air ait an- ana anb and ane anf ang ani ann ano anr ant aoa aob aod aoe aof aog aoi aon aoo aor aot ar- ara arb ard are arf arg ari arn aro arr art at- ata atb atd ate atf atg ati atn ato atr att baa bab bad bae baf bag bai ban bao bar bat bba bbb bbd bbe bbf bbg bbi bbn bbo bbr bbt bda bdb bdd bde bdf bdg bdi bdo bdr bdt be- bea beb bed bee bef beg bei ben beo ber bet bfa bfb bfd bfe bff bfg bfi bfn bfo bfr bft bga bgb bgd bge bgf bgg bgi bgn bgo bgr bgt bi- bia bib bid bie bif big bii bin bio bir bit bna bnb bnd bne bnf bng bni bnn bno bnr bnt boa bob bod boe bof bog boi bon boo bor bot bra brb brd bre brf brg bri brn bro brr brt bta btb btd bte btf btg bti btn bto btr btt daa dab dad dae daf dag dai dan dao dar dat dba dbb dbd dbe dbf dbg dbi dbn dbo dbr dbt dda ddb ddd dde ddf ddg ddi ddn ddo ddr ddt de- dea deb ded dee def deg dei den deo der det dfa dfb dfd dfe dff dfg dfi dfn dfo dfr dft dga dgd dge dgf dgg dgi dgn dgr dgt di- dia dib did die dif dig dii din dio dir dit dna dnb dnd dne dnf dng dni dnn dno dnr dnt doa dob dod doe dof dog doi don doo dor dot dra drb drd dre drg dri drn dro drr drt dta dtb dtd dte dtf dtg dti dtn dto dtr dtt eaa eab ead eae eaf eag eai ean eao ear eat eba ebb ebd ebe ebf ebg ebi ebn ebo ebr ebt ed- eda edb edd ede edf edg edi edn edo edr edt eea eeb eed eee eef eeg een eeo eer eet ef- efa efb efd efe eff efg efi efo efr eft ega egb egd ege egf egg egi egn ego egr egt eia eib eid eie eif eig eii ein eio eir eit en- ena enb end ene enf eng eni enn eno enr ent eo- eoa eob eod eoe eof eog eoi eon eoo eor eot era erb erd ere erf erg eri ern ero err ert eta etb etd ete etf etg eti etn eto etr ett faa fab fad fae faf fag fai fan fao far fat fba fbb fbd fbe fbf fbg fbi fbn fbo fbr fbt fda fdb fdd fde fdf fdg fdi fdn fdo fdr fdt fea feb fed fee fef feg fei fen feo fer fet ffa ffd ffe fff ffg ffi ffn ffo ffr fft fga fgb fgd fge fgf fgg fgi fgn fgr fgt fia fib fid fie fif fig fii fin fir fit fna fnb fnd fne fnf fng fni fnn fnr fnt foa fob foe fof fog foi fon foo for fot fra frb frd fre frf frg fri frn fro frr frt fta ftb ftd fte ftf ftg fti ftn fto ftr ftt g-d gaa gab gad gae gaf gag gai gan gao gar gat gba gbd gbe gbf gbg gbi gbn gbo gbr gbt gda gdb gdd gde gdf gdi gdn gdo gdr gdt ge- gea geb ged gee gef geg gei gen geo ger get gfa gfb gfd gfe gff gfi gfo gfr gft gga ggb ggd ggg ggi ggn ggo ggr ggt gia gib gid gie gif gig gii gin gio gir git gna gnb gnd gne gnf gni gnn gno gnr gnt goa gob god goe gof gog goi gon goo gor got gra grb grd gre grf grg gri grn gro grr grt gta gtb gtd gte gtf gtg gti gtn gto gtr gtt i-d i-f ia- iaa iab iad iae iaf iag iai ian iao iar iat iba ibb ibd ibe ibf ibg ibi ibn ibo ibr ibt ida idb idd ide idf idg idi idn ido idr idt ie- iea ied iee ief ieg iei ien ier iet ifa ifb ifd ife iff ifg ifi ifn ifo ifr ift iga igb igd ige igf igg igi ign igo igr igt iia iib iid iie iif iii iin iio iir iit in- ina inb ind ine inf ing ini inn ino inr int io- ioa iob iod ioe iof iog ioi ion ioo ior iot ir- ira irb ird ire irf irg iri irn iro irr irt ita itb itd ite itf itg iti itn ito itt n-i naa nab nad nae naf nag nai nan nao nar nat nba nbb nbd nbe nbf nbg nbi nbn nbo nbr nbt nda ndb ndd nde ndf ndg ndi ndn ndo ndr ndt ne- nea neb ned nee nef neg nei nen neo ner net nfa nfb nfd nfe nff nfi nfn nfo nfr nft nga ngb ngd nge ngf ngg ngi ngn ngo ngt nia nib nid nie nif nig nii nin nio nir nit nna nnb nne nnf nng nni nnn nno nnt no- noa nob nod noe nof nog noi non noo nor not nra nrb nrd nre nrf nrg nri nrn nro nrr nrt nta ntb ntd nte ntf ntg nti ntn nto ntr ntt o-i oaa oab oad oae oaf oag oai oan oao oar oat ob- oba obb obd obe obf obg obi obn obo obr obt oda