a-a a-c aaa aac aad aah aak aao aar aav ac- aca acc acd ach ack aco acr acv ad- ada adc add adh adk ado adr adv aha ahc ahd ahh ahk aho ahr ahv aka akc akd akh akk ako akr akv aoa aoc aod aoh aok aoo aor aov ar- ara arc ard arh ark aro arr arv av- ava avc avd avh avk avo avr c-- caa cac cad cah cak cao car cav cca ccc ccd cch cck cco ccr ccv cda cdc cdd cdh cdk cdo cdr cdv ch- cha chc chd chh chk cho chr chv cka ckc ckd ckh cko co- coa coc cod coh cok coo cor cov cra crc crd crh crk cro crr crv cva cvc cvd cvh cvk cvo cvr cvv daa dac dad dah dak dao dar dav dca dcc dcd dck dco dcr dcv dda ddc ddd ddh ddk ddo ddr dh- dha dhc dhd dhh dhk dho dhr dka dkc dkk dko dkr doa doc dod doh dok doo dor dov dra drc drd drk dro drr drv dva dvc dvd dvh dvk dvr haa hac had hah hak hao har hav hca hcc hcd hch hck hco hcr hcv hda hdc hdd hdh hdk hdo hdr hdv hha hhc hhd hhh hhk hho hhr hhv hka hkd hkh hkk hko hkr hoa hoc hod hoh hok hoo hor hov hr- hra hrc hrd hrh hrk hro hrr hrv hv- hva hvc hvd hvk hvo hvr hvv ka- kaa kac kad kah kak kao kar kav kca kcc kcd kch kck kcr kda kdc kdh kdk kdo kdr kha khh khk kho khr khv kkc kkh kkk kkr kkv koa koc kod koh kok koo kor kra krc krd krk kro krr krv kva kvh kvk kvo kvr kvv oaa oac oad oah oak oao oar oav oc- oca occ ocd och ock oco ocr ocv oda odc odd odh odo odr odv oha ohc ohd ohh oho ohr oka okc okd okk oko okr oo- ooa ooc ood ooh ook ooo oor oov or- ora orc ord orh ork oro orr orv ov- ova ovc ovd ovh ovo ovv ra- raa rac rad rah rak rao rar rav rca rcc rcd rch rco rcr rcv rda rdc rdd rdh rdo rdr rdv rh- rha rhc rhd rhh rho rhr rhv rkc rkk rko rkv roa roc rod roh rok roo ror rov rra rrc rrd rrh rrk rrr rva rvc rvd rvh rvo rvr rvv v-a vaa vac vad vah vak vao var vav vca vcc vcd vch vco vcr vdc vdd vdh vdk vdo vdr vdv vh- vha vhc vhd vho vka voa voc vod voh vok voo vor vov vra vrc vrd vrh vrk vrr vva vvc vvo vvr vvv