a-a a-t aaa aad aaf aan aao aas aat ad- ada add adf adn ado ads adt af- afa afd aff afn afo afs aft an- ana and anf ann ano ans ant aoa aod aof aon aoo aos aot as- asa asd asf asn aso ass ast at- ata atd atf atn ato ats att daa dad daf dan dao das dat dda ddd ddf ddn ddo dds ddt dfa dfd dff dfn dfo dfs dft dna dnd dnf dnn dno dns dnt doa dod dof don doo dos dot dsa dsd dsf dsn dso dss dst dta dtd dtf dtn dto dts dtt faa fad faf fan fao fas fat fda fdd fdf fdn fdo fds fdt ffa ffd fff ffn ffo ffs fft fna fnd fnf fnn fns fnt foa fof fon foo fos fot fsa fsd fsf fsn fso fss fst fta ftd ftf ftn fto fts ftt naa nad naf nan nao nas nat nda ndd ndf ndn ndo nds ndt nfa nfd nff nfn nfo nfs nft nna nnf nnn nno nns nnt no- noa nod nof non noo nos not nsa nsd nsf nsn nso nss nst nta ntd ntf ntn nto nts ntt oaa oad oaf oan oao oas oat oda odd odf odn odo ods odt of- ofa ofd off ofn ofo ofs oft on- ona ond onf onn ono ons ont oo- ooa ood oof oon ooo oos oot os- osa osd osf osn oso oss ost ot- ota otd otf otn oto ots ott saa sad saf san sao sas sat sda sdd sdf sdn sdo sds sdt sfa sfd sff sfn sfo sfs sft sna snd snf snn sno sns snt soa sod sof son soo sos sot ss- ssa ssd ssf ssn sso sss sst sta std stf stn sto sts stt taa tad taf tan tao tas tat tda tdd tdf tdn tdo tds tdt tfa tfd tff tfn tfo tfs tft tna tnd tnf tnn tno tns tnt to- toa tod tof ton too tos tot tsa tsd tsf tsn tso tss tst tta ttd ttf ttn tto tts ttt