a-a a-c a-t aaa aac aad aaf aak aao aar aat aav ac- aca acc acd acf ack aco acr act acv ad- ada adc add adf adk ado adr adt adv af- afa afc afd aff afk afo afr aft afv aka akc akd akk ako akr akv aoa aoc aod aof aok aoo aor aot aov ar- ara arc ard arf ark aro arr art arv at- ata atc atd atf ato atr att atv av- ava avc avd avf avk avo avr avt c-- caa cac cad caf cak cao car cat cav cca ccc ccd ccf cck cco ccr cct ccv cda cdc cdd cdf cdk cdo cdr cdt cdv cfa cfc cfd cff cfk cfo cfr cft cfv cka ckc ckd cko ckt co- coa coc cod cof cok coo cor cot cov cra crc crd crf crk cro crr crt crv cta ctc ctd ctf ctk cto ctr ctt ctv cva cvc cvd cvf cvk cvo cvr cvt cvv daa dac dad daf dak dao dar dat dav dca dcc dcd dcf dck dco dcr dct dcv dda ddc ddd ddf ddk ddo ddr ddt dfa dfc dfd dff dfk dfo dfr dft dfv dka dkc dkk dko dkr dkt doa doc dod dof dok doo dor dot dov dra drc drd drk dro drr drt drv dta dtc dtd dtf dtk dto dtr dtt dtv dva dvc dvd dvk dvr dvt faa fac fad faf fak fao far fat fav fca fcc fcd fcf fck fco fcr fct fcv fda fdc fdd fdf fdk fdo fdr fdt ffa ffc ffd fff ffk ffo ffr fft ffv fka fkc fkf fkk fkt foa foc fof fok foo for fot fra frc frd frf frk fro frr frt fta ftc ftd ftf ftk fto ftr ftt ftv fva fvc fvd fvk fvt k-t ka- kaa kac kad kaf kak kao kar kat kav kca kcc kcd kck kcr kct kda kdc kdf kdk kdo kdr kdt kfa kfc kfd kff kfo kkc kkk kkr kkt kkv koa koc kod kof kok koo kor kot kra krc krd krf krk kro krr krt krv kta ktc ktf ktk kto ktr ktt ktv kva kvk kvo kvr kvv oaa oac oad oaf oak oao oar oat oav oc- oca occ ocd ocf ock oco ocr oct ocv oda odc odd odf odo odr odt odv of- ofa ofc ofd off ofo ofr oft ofv oka okc okd okk oko okr oo- ooa ooc ood oof ook ooo oor oot oov or- ora orc ord orf ork oro orr ort orv ot- ota otc otd otf otk oto otr ott otv ov- ova ovc ovd ovf ovo ovv ra- raa rac rad raf rak rao rar rat rav rca rcc rcd rcf rco rcr rct rcv rda rdc rdd rdf rdo rdr rdt rdv rfa rfc rfd rff rfk rfo rfr rft rfv rkc rkf rkk rko rkt rkv roa roc rod rof rok roo ror rot rov rra rrc rrd rrf rrk rrr rrt rta rtc rtd rtf rtk rto rtr rtt rtv rva rvc rvd rvf rvo rvr rvt rvv taa tac tad taf tak tao tar tat tav tca tcc tcd tcf tck tco tcr tct tcv tda tdc tdd tdf tdk tdo tdr tdt tdv tfa tfc tfd tff tfk tfo tfr tft tka tkc tkk tko tkr tkt to- toa toc tod tof tok too tor tot tov tra trc trd trf trk tro trr trt trv tta ttc ttd ttf ttk tto ttr ttt ttv tva tvc tvd tvf tvk tvo tvr tvt v-a vaa vac vad vak vao var vat vav vca vcc vcd vcf vco vcr vct vdc vdd vdf vdk vdo vdr vdt vdv vfa vfc vfd vff vfr vft vfv vka vkt voa voc vod vof vok voo vor vot vov vra vrc vrd vrf vrk vrr vrt vta vtc vtk vto vtr vtt vtv vva vvc vvo vvr vvt vvv