a-a a-c a-t aaa aac aad aao aar aas aat aav ac- aca acc acd aco acr acs act acv ad- ada adc add ado adr ads adt adv aoa aoc aod aoo aor aos aot aov ar- ara arc ard aro arr ars art arv as- asa asc asd aso asr ass ast asv at- ata atc atd ato atr ats att atv av- ava avc avd avo avr avs avt c-- caa cac cad cao car cas cat cav cca ccc ccd cco ccr ccs cct ccv cda cdc cdd cdo cdr cds cdt cdv co- coa coc cod coo cor cos cot cov cra crc crd cro crr crs crt crv csa csc csd cso csr css cst csv cta ctc ctd cto ctr cts ctt ctv cva cvc cvd cvo cvr cvs cvt cvv daa dac dad dao dar das dat dav dca dcc dcd dco dcr dcs dct dcv dda ddc ddd ddo ddr dds ddt doa doc dod doo dor dos dot dov dra drc drd dro drr drs drt drv dsa dsc dsd dso dsr dss dst dsv dta dtc dtd dto dtr dts dtt dtv dva dvc dvd dvr dvs dvt oaa oac oad oao oar oas oat oav oc- oca occ ocd oco ocr ocs oct ocv oda odc odd odo odr ods odt odv oo- ooa ooc ood ooo oor oos oot oov or- ora orc ord oro orr ors ort orv os- osa osc osd oso osr oss ost osv ot- ota otc otd oto otr ots ott otv ov- ova ovc ovd ovo ovs ovv ra- raa rac rad rao rar ras rat rav rca rcc rcd rco rcr rcs rct rcv rda rdc rdd rdo rdr rds rdt rdv roa roc rod roo ror ros rot rov rra rrc rrd rrr rrs rrt rsa rsc rsd rso rsr rss rst rsv rta rtc rtd rto rtr rts rtt rtv rva rvc rvd rvo rvr rvs rvt rvv saa sac sad sao sar sas sat sav sca scc scd sco scr scs sct scv sda sdc sdd sdo sdr sds sdt sdv soa soc sod soo sor sos sot sov sr- sra src srd sro srr srs srt srv ss- ssa ssc ssd sso ssr sss sst ssv sta stc std sto str sts stt stv sva svc svd svo svr svs svt svv taa tac tad tao tar tas tat tav tca tcc tcd tco tcr tcs tct tcv tda tdc tdd tdo tdr tds tdt tdv to- toa toc tod too tor tos tot tov tra trc trd tro trr trs trt trv tsa tsc tsd tso tsr tss tst tsv tta ttc ttd tto ttr tts ttt ttv tva tvc tvd tvo tvr tvs tvt v-a vaa vac vad vao var vas vat vav vca vcc vcd vco vcr vcs vct vdc vdd vdo vdr vds vdt vdv voa voc vod voo vor vos vot vov vra vrc vrd vrr vrs vrt vsa vsc vsd vso vsr vss vst vsv vta vtc vto vtr vts vtt vtv vva vvc vvo vvr vvs vvt vvv