a-a a-t aaa aad aaf aag aao aas aat ad- ada add adf adg ado ads adt af- afa afd aff afg afo afs aft ag- aga agd agf agg ago ags agt aoa aod aof aog aoo aos aot as- asa asd asf asg aso ass ast at- ata atd atf atg ato ats att daa dad daf dag dao das dat dda ddd ddf ddg ddo dds ddt dfa dfd dff dfg dfo dfs dft dga dgd dgf dgg dgs dgt doa dod dof dog doo dos dot dsa dsd dsf dsg dso dss dst dta dtd dtf dtg dto dts dtt faa fad faf fag fao fas fat fda fdd fdf fdg fdo fds fdt ffa ffd fff ffg ffo ffs fft fga fgd fgf fgg fgs fgt foa fof fog foo fos fot fsa fsd fsf fsg fso fss fst fta ftd ftf ftg fto fts ftt g-d gaa gad gaf gag gao gas gat gda gdd gdf gdo gds gdt gfa gfd gff gfo gfs gft gga ggd ggg ggo ggs ggt goa god gof gog goo gos got gsa gsd gsf gsg gso gss gst gta gtd gtf gtg gto gts gtt oaa oad oaf oag oao oas oat oda odd odf odg odo ods odt of- ofa ofd off ofg ofo ofs oft oga ogd ogf ogg ogo ogs ogt oo- ooa ood oof oog ooo oos oot os- osa osd osf osg oso oss ost ot- ota otd otf otg oto ots ott saa sad saf sag sao sas sat sda sdd sdf sdg sdo sds sdt sfa sfd sff sfg sfo sfs sft sga sgd sgf sgg sgo sgs sgt soa sod sof sog soo sos sot ss- ssa ssd ssf ssg sso sss sst sta std stf stg sto sts stt taa tad taf tag tao tas tat tda tdd tdf tdg tdo tds tdt tfa tfd tff tfg tfo tfs tft tga tgf tgg tgo tgs tgt to- toa tod tof tog too tos tot tsa tsd tsf tsg tso tss tst tta ttd ttf ttg tto tts ttt