a-a a-t aaa aad aaf aao aap aas aat ad- ada add adf ado adp ads adt af- afa afd aff afo afp afs aft aoa aod aof aoo aop aos aot ap- apa apd apf apo app aps apt as- asa asd asf aso asp ass ast at- ata atd atf ato atp ats att daa dad daf dao dap das dat dda ddd ddf ddo ddp dds ddt dfa dfd dff dfo dfp dfs dft doa dod dof doo dop dos dot dpa dpd dpf dpo dpp dps dpt dsa dsd dsf dso dsp dss dst dta dtd dtf dto dtp dts dtt faa fad faf fao fap fas fat fda fdd fdf fdo fdp fds fdt ffa ffd fff ffo ffp ffs fft foa fof foo fop fos fot fpa fpd fpo fpp fps fpt fsa fsd fsf fso fsp fss fst fta ftd ftf fto ftp fts ftt oaa oad oaf oao oap oas oat oda odd odf odo odp ods odt of- ofa ofd off ofo ofp ofs oft oo- ooa ood oof ooo oop oos oot op- opa opd opf opo opp ops opt os- osa osd osf oso osp oss ost ot- ota otd otf oto otp ots ott p-p paa pad paf pao pap pas pat pda pdd pdf pdo pdp pds pdt pfa pfd pff pfo pfp pfs pft poa pod pof poo pop pos pot ppa ppd ppf ppo ppp pps ppt ps- psa psd psf pso psp pss pst pt- pta ptd ptf pto ptp pts ptt saa sad saf sao sap sas sat sda sdd sdf sdo sdp sds sdt sfa sfd sff sfo sfp sfs sft soa sod sof soo sop sos sot spa spd spf spo spp sps spt ss- ssa ssd ssf sso ssp sss sst sta std stf sto stp sts stt taa tad taf tao tap tas tat tda tdd tdf tdo tdp tds tdt tfa tfd tff tfo tfp tfs tft to- toa tod tof too top tos tot tpa tpd tpf tpo tpp tps tpt tsa tsd tsf tso tsp tss tst tta ttd ttf tto ttp tts ttt