a-a aaa aad aaf aao aap aar aas ad- ada add adf ado adp adr ads af- afa afd aff afo afp afr afs aoa aod aof aoo aop aor aos ap- apa apd apf apo app apr aps ar- ara ard arf aro arp arr ars as- asa asd asf aso asp asr ass daa dad daf dao dap dar das dda ddd ddf ddo ddp ddr dds dfa dfd dff dfo dfp dfr dfs doa dod dof doo dop dor dos dpa dpd dpf dpo dpp dpr dps dra drd dro drp drr drs dsa dsd dsf dso dsp dsr dss faa fad faf fao fap far fas fda fdd fdf fdo fdp fdr fds ffa ffd fff ffo ffp ffr ffs foa fof foo fop for fos fpa fpd fpo fpp fpr fps fra frd frf fro frp frr frs fsa fsd fsf fso fsp fsr fss oaa oad oaf oao oap oar oas oda odd odf odo odp odr ods of- ofa ofd off ofo ofp ofr ofs oo- ooa ood oof ooo oop oor oos op- opa opd opf opo opp opr ops or- ora ord orf oro orp orr ors os- osa osd osf oso osp osr oss p-p paa pad paf pao pap par pas pda pdd pdf pdo pdp pdr pds pfa pfd pff pfo pfp pfr pfs poa pod pof poo pop por pos ppa ppd ppf ppo ppp ppr pps pra prd prf pro prp prr prs ps- psa psd psf pso psp psr pss ra- raa rad raf rao rap rar ras rda rdd rdf rdo rdp rdr rds rfa rfd rff rfo rfp rfr rfs roa rod rof roo rop ror ros rpa rpd rpf rpo rpp rpr rps rra rrd rrf rrp rrr rrs rsa rsd rsf rso rsp rsr rss saa sad saf sao sap sar sas sda sdd sdf sdo sdp sdr sds sfa sfd sff sfo sfp sfr sfs soa sod sof soo sop sor sos spa spd spf spo spp spr sps sr- sra srd srf sro srp srr srs ss- ssa ssd ssf sso ssp ssr sss