a-a a-b a-i a-t aaa aab aad aaf aai aan aao aar aas aat aau ab- aba abb abd abf abi abn abo abr abs abt abu ad- ada adb add adf adi adn ado adr ads adt adu af- afa afb afd aff afi afn afo afr afs aft afu ai- aia aib aid aif aii ain aio air ais ait aiu an- ana anb and anf ani ann ano anr ans ant anu aoa aob aod aof aoi aon aoo aor aos aot aou ar- ara arb ard arf ari arn aro arr ars art aru as- asa asb asd asf asi asn aso asr ass ast asu at- ata atb atd atf ati atn ato atr ats att atu au- aua aub aud auf aui aun auo aur aus aut b-u baa bab bad baf bai ban bao bar bas bat bau bba bbb bbd bbf bbi bbn bbo bbr bbs bbt bbu bda bdb bdd bdf bdi bdo bdr bds bdt bdu bfa bfb bfd bff bfi bfn bfo bfr bfs bft bfu bi- bia bib bid bif bii bin bio bir bis bit biu bna bnb bnd bnf bni bnn bno bnr bns bnt bnu boa bob bod bof boi bon boo bor bos bot bou bra brb brd brf bri brn bro brr brs brt bru bsa bsb bsd bsf bsi bsn bso bsr bss bst bsu bta btb btd btf bti btn bto btr bts btt btu bua bub bud buf bui bun buo bur bus but buu daa dab dad daf dai dan dao dar das dat dau dba dbb dbd dbf dbi dbn dbo dbr dbs dbt dbu dda ddb ddd ddf ddi ddn ddo ddr dds ddt ddu dfa dfb dfd dff dfi dfn dfo dfr dfs dft dfu di- dia dib did dif dii din dio dir dis dit diu dna dnb dnd dnf dni dnn dno dnr dns dnt doa dob dod dof doi don doo dor dos dot dou dra drb drd dri drn dro drr drs drt dru dsa dsb dsd dsf dsi dsn dso dsr dss dst dsu dta dtb dtd dtf dti dtn dto dtr dts dtt dtu dua dub dud duf dui dun duo dur dus dut faa fab fad faf fai fan fao far fas fat fau fba fbb fbd fbf fbi fbn fbo fbr fbs fbt fbu fda fdb fdd fdf fdi fdn fdo fdr fds fdt fdu ffa ffd fff ffi ffn ffo ffr ffs fft ffu fia fib fid fif fii fin fir fis fit fiu fna fnb fnd fnf fni fnn fnr fns fnt fnu foa fob fof foi fon foo for fos fot fou fra frb frd frf fri frn fro frr frs frt fru fsa fsb fsd fsf fsi fsn fso fsr fss fst fsu fta ftb ftd ftf fti ftn fto ftr fts ftt ftu fua fub fud fuf fui fun fuo fur fus fut fuu i-d i-f ia- iaa iab iad iaf iai ian iao iar ias iat iau iba ibb ibd ibf ibi ibn ibo ibr ibs ibt ibu ida idb idd idf idi idn ido idr ids idt idu ifa ifb ifd iff ifi ifn ifo ifr ifs ift ifu iia iib iid iif iii iin iio iir iis iit iiu in- ina inb ind inf ini inn ino inr ins int inu io- ioa iob iod iof ioi ion ioo ior ios iot iou ir- ira irb ird irf iri irn iro irr irs irt iru is- isa isb isd isf isi isn iso isr iss ist isu ita itb itd itf iti itn ito its itt itu iu- iua iub iud iui iur ius iut n-i naa nab nad naf nai nan nao nar nas nat nau nba nbb nbd nbf nbi nbn nbo nbr nbs nbt nbu nda ndb ndd ndf ndi ndn ndo ndr nds ndt ndu nfa nfb nfd nff nfi nfn nfo nfr nfs nft nfu nia nib nid nif nii nin nio nir nis nit niu nna nnb nnf nni nnn nno nns nnt nnu no- noa nob nod nof noi non noo nor nos not nou nra nrb nrd nrf nri nrn nro nrr nrs nrt nru nsa nsb nsd nsf nsi nsn nso nsr nss nst nsu nta ntb ntd ntf nti ntn nto ntr nts ntt ntu nua nub nud nui nun nuo nur nus nut nuu o-i oaa oab oad oaf oai oan oao oar oas oat oau ob- oba obb obd obf obi obn obo obr obs obt obu oda odb odd odf odi odn odo odr ods odt odu of- ofa ofb ofd off ofi ofn ofo ofr ofs oft ofu oia oib oid oif oii oin oio oir ois oit oiu on- ona onb ond onf oni onn ono onr ons ont onu oo- ooa oob ood oof ooi oon ooo oor oos oot or- ora orb ord orf ori orn oro orr ors ort oru os- osa osb osd osf osi osn oso osr oss ost osu ot- ota otb otd otf oti otn oto otr ots ott otu ou- oua oud ouf oui oun ouo our ous out ra- raa rab rad raf rai ran rao rar ras rat rau rba rbb rbd rbf rbi rbn rbo rbr rbs rbt rbu rda rdb rdd rdf rdi rdn rdo rdr rds rdt rdu rfa rfb rfd rff rfi rfn rfo rfr rfs rft rfu ria rib rid rif rii rin rio rir ris rit rna rnb rnd rni rnn rno rnr rns rnt rnu roa rob rod rof roi ron roo ror ros rot rou rra rrb rrd rrf rri rrn rrr rrs rrt rru rsa rsb rsd rsf rsi rsn rso rsr rss rst rsu rta rtb rtd rtf rti rtn rto rtr rts rtt rtu rua rub rud ruf rui run ruo rur rus rut ruu saa sab sad saf sai san sao sar sas sat sau sba sbb sbd sbf sbi sbn sbo sbr