a-a a-t aaa aad aap aar aas aat ad- ada add adp adr ads adt ap- apa apd app apr aps apt ar- ara ard arp arr ars art as- asa asd asp asr ass ast at- ata atd atp atr ats att daa dad dap dar das dat dda ddd ddp ddr dds ddt dpa dpd dpp dpr dps dpt dra drd drp drr drs drt dsa dsd dsp dsr dss dst dta dtd dtp dtr dts dtt p-p paa pad pap par pas pat pda pdd pdp pdr pds pdt ppa ppd ppp ppr pps ppt pra prd prp prr prs prt ps- psa psd psp psr pss pst pt- pta ptd ptp ptr pts ptt ra- raa rad rap rar ras rat rda rdd rdp rdr rds rdt rpa rpd rpp rpr rps rpt rra rrd rrp rrr rrs rrt rsa rsd rsp rsr rss rst rta rtd rtp rtr rts rtt saa sad sap sar sas sat sda sdd sdp sdr sds sdt spa spd spp spr sps spt sr- sra srd srp srr srs srt ss- ssa ssd ssp ssr sss sst sta std stp str sts stt taa tad tap tar tas tat tda tdd tdp tdr tds tdt tpa tpd tpp tpr tps tpt tra trd trp trr trs trt tsa tsd tsp tsr tss tst tta ttd ttp ttr tts ttt