a-a a-b a-i a-t aaa aab aad aaf aai aan aao aar aas aat aaw ab- aba abb abd abf abi abn abo abr abs abt abw ad- ada adb add adf adi adn ado adr ads adt adw af- afa afb afd aff afi afn afo afr afs aft afw ai- aia aib aid aif aii ain aio air ais ait aiw an- ana anb and anf ani ann ano anr ans ant aoa aob aod aof aoi aon aoo aor aos aot aow ar- ara arb ard arf ari arn aro arr ars art arw as- asa asb asd asf asi asn aso asr ass ast asw at- ata atb atd atf ati atn ato atr ats att atw aw- awa awb awd awf awi awn awo awr aws awt aww baa bab bad baf bai ban bao bar bas bat baw bba bbb bbd bbf bbi bbn bbo bbr bbs bbt bbw bda bdb bdd bdf bdi bdo bdr bds bdt bdw bfa bfb bfd bff bfi bfn bfo bfr bfs bft bi- bia bib bid bif bii bin bio bir bis bit biw bna bnb bnd bnf bni bnn bno bnr bns bnt bnw boa bob bod bof boi bon boo bor bos bot bow bra brb brd brf bri brn bro brr brs brt brw bsa bsb bsd bsf bsi bsn bso bsr bss bst bsw bta btb btd btf bti btn bto btr bts btt btw bwa bwb bwd bwf bwi bwo bwr bws daa dab dad daf dai dan dao dar das dat daw dba dbb dbd dbf dbi dbn dbo dbr dbs dbt dda ddb ddd ddf ddi ddn ddo ddr dds ddt ddw dfa dfb dfd dff dfi dfn dfo dfr dfs dft dfw di- dia dib did dif dii din dio dir dis dit diw dna dnb dnd dnf dni dnn dno dnr dns dnt dnw doa dob dod dof doi don doo dor dos dot dow dra drb drd dri drn dro drr drs drt drw dsa dsb dsd dsf dsi dsn dso dsr dss dst dsw dta dtb dtd dtf dti dtn dto dtr dts dtt dtw dwa dwb dwf dwi dwn dwo dwr dws dwt dww faa fab fad faf fai fan fao far fas fat faw fba fbb fbd fbf fbi fbn fbo fbr fbs fbt fbw fda fdb fdd fdf fdi fdn fdo fdr fds fdt ffa ffd fff ffi ffn ffo ffr ffs fft ffw fia fib fid fif fii fin fir fis fit fna fnb fnd fnf fni fnn fnr fns fnt fnw foa fob fof foi fon foo for fos fot fow fra frb frd frf fri frn fro frr frs frt frw fsa fsb fsd fsf fsi fsn fso fsr fss fst fsw fta ftb ftd ftf fti ftn fto ftr fts ftt ftw fwa fwb fwd fwf fwi fwn fwo fws fwt i-d i-f ia- iaa iab iad iaf iai ian iao iar ias iat iaw iba ibb ibd ibf ibi ibn ibo ibr ibs ibt ibw ida idb idd idf idi idn ido idr ids idt idw ifa ifb ifd iff ifi ifn ifo ifr ifs ift iia iib iid iif iii iin iio iir iis iit iiw in- ina inb ind inf ini inn ino inr ins int io- ioa iob iod iof ioi ion ioo ior ios iot iow ir- ira irb ird irf iri irn iro irr irs irt is- isa isb isd isf isi isn iso isr iss ist isw ita itb itd itf iti itn ito its itt iwa iwb iwd iwf iwi iwo iwr iws iwt iww n-i naa nab nad naf nai nan nao nar nas nat naw nba nbb nbd nbf nbi nbn nbo nbr nbs nbt nbw nda ndb ndd ndf ndi ndn ndo ndr nds ndt nfa nfb nfd nff nfi nfn nfo nfr nfs nft nia nib nid nif nii nin nio nir nis nit nna nnb nnf nni nnn nno nns nnt nnw no- noa nob nod nof noi non noo nor nos not now nra nrb nrd nrf nri nrn nro nrr nrs nrt nrw nsa nsb nsd nsf nsi nsn nso nsr nss nst nsw nta ntb ntd ntf nti ntn nto ntr nts ntt nwa nwb nwd nwf nwi nwn nwo nwr nws nwt o-i oaa oab oad oaf oai oan oao oar oas oat oaw ob- oba obb obd obf obi obn obo obr obs obt obw oda odb odd odf odi odn odo odr ods odt of- ofa ofb ofd off ofi ofn ofo ofr ofs oft ofw oia oib oid oif oii oin oio oir ois oit on- ona onb ond onf oni onn ono onr ons ont oo- ooa oob ood oof ooi oon ooo oor oos oot oow or- ora orb ord orf ori orn oro orr ors ort os- osa osb osd osf osi osn oso osr oss ost osw ot- ota otb otd otf oti otn oto otr ots ott otw owa owb owd owf owi own owo ows owt oww ra- raa rab rad raf rai ran rao rar ras rat raw rba rbb rbd rbf rbi rbn rbo rbr rbs rbt rbw rda rdb rdd rdf rdi rdn rdo rdr rds rdt rfa rfb rfd rff rfi rfn rfo rfr rfs rft rfw ria rib rid rif rii rin rio rir ris rit rna rnb rnd rni rnn rno rnr rns rnt rnw roa rob rod rof roi ron roo ror ros rot row rra rrb rrd rrf rri rrn rrr rrs rrt rsa rsb rsd rsf rsi rsn rso rsr rss rst rsw rta rtb rtd rtf rti rtn rto rtr rts rtt rtw rwa rwb rwd rwf rwi rwr rws saa sab sad saf sai san sao sar sas sat saw sba sbb sbd sbf sbi sbn sbo sbr sbs sbt sbw sda sdb sdd sdf sdi sdn sdo sdr sds sdt sdw sfa sfb sfd sff sfi sfn sfo sfr sfs sft