a-a a-t aaa aaf aaj aao aas aat af- afa aff afj afo afs aft aja ajf ajj ajo ajs ajt aoa aof aoj aoo aos aot as- asa asf asj aso ass ast at- ata atf ato ats att faa faf faj fao fas fat ffa fff ffo ffs fft fja fjs foa fof foo fos fot fsa fsf fsj fso fss fst fta ftf fto fts ftt jaa jaf jaj jao jas jat jfa jff jfj jfo jfs jft jja jjf jjj jjs joa jof joj joo jos jot jsa jsf jsj jso jss jst jta jtf jts jtt oaa oaf oaj oao oas oat of- ofa off ofo ofs oft oja ojo ojs oo- ooa oof ooo oos oot os- osa osf osj oso oss ost ot- ota otf oto ots ott saa saf saj sao sas sat sfa sff sfj sfo sfs sft sja sjf sjj sjs sjt soa sof soj soo sos sot ss- ssa ssf ssj sso sss sst sta stf stj sto sts stt taa taf taj tao tas tat tfa tff tfj tfo tfs tft tjf tjo tjs to- toa tof toj too tos tot tsa tsf tsj tso tss tst tta ttf tto tts ttt