-er a-a a-b a-c aaa aab aac aad aae aah aak aao aar aav ab- aba abb abc abd abe abh abk abo abr abv ac- aca acb acc acd ace ach ack aco acr acv ad- ada adb adc add ade adh adk ado adr adv aea aeb aec aed aee aeh aek aeo aer aev aha ahb ahc ahd ahe ahh ahk aho ahr ahv aka akb akc akd ake akh akk ako akr akv aoa aob aoc aod aoe aoh aok aoo aor aov ar- ara arb arc ard are arh ark aro arr arv av- ava avb avc avd ave avh avk avo avr baa bab bac bad bae bah bak bao bar bav bba bbb bbc bbd bbe bbh bbk bbo bbr bca bcb bcc bcd bce bch bck bco bcr bcv bda bdb bdc bdd bde bdh bdk bdo bdr bdv be- bea beb bec bed bee beh bek beo ber bev bha bhb bhc bhd bhe bhh bhk bho bhr bhv bka bkb bkc bke bkk bko bkr bkv boa bob boc bod boe boh bok boo bor bov bra brb brd bre brh brk bro brr brv bva bvb bvc bvd bve bvh bvk bvo bvr bvv c-- caa cab cac cad cae cah cak cao car cav cba cbb cbc cbd cbe cbh cbk cbo cbr cbv cca ccb ccc ccd cce cch cck cco ccr ccv cda cdb cdc cdd cde cdh cdk cdo cdr cdv ce- cea ceb cec ced cee ceh cek ceo cer cev ch- cha chb chc chd che chh chk cho chr chv cka ckb ckc ckd ckh cko co- coa cob coc cod coe coh cok coo cor cov cra crb crc crd cre crh crk cro crr crv cva cvb cvc cvd cve cvh cvk cvo cvr cvv daa dab dac dad dae dah dak dao dar dav dba dbb dbc dbd dbe dbh dbk dbo dbr dbv dca dcb dcc dcd dce dck dco dcr dcv dda ddb ddc ddd dde ddh ddk ddo ddr de- dea deb dec ded dee deh dek deo der dev dh- dha dhb dhc dhd dhe dhh dhk dho dhr dka dkb dkc dke dkk dko dkr doa dob doc dod doe doh dok doo dor dov dra drb drc drd dre drk dro drr drv dva dvb dvc dvd dve dvh dvk dvr eaa eab eac ead eae eah eak eao ear eav eba ebb ebc ebd ebe ebh ebk ebo ebr ebv ec- eca ecb ecc ecd ece ech eck eco ecr ecv ed- eda edb edc edd ede edh edk edo edr eea eeb eec eed eee eek eeo eer eev eha ehb ehc ehd ehe ehh eho ehr ehv eka ekb ekc ekd eke ekh eko ekr ekv eo- eoa eob eoc eod eoe eoh eok eoo eor era erb erc erd ere erh erk ero err erv eva evb evc evd eve evh evo evr evv haa hab hac had hae hah hak hao har hav hba hbb hbc hbd hbe hbh hbk hbo hbr hbv hca hcb hcc hcd hce hch hck hco hcr hcv hda hdb hdc hdd hde hdh hdk hdo hdr hdv he- hea heb hec hed hee heh hek heo her hev hha hhb hhc hhd hhe hhh hhk hho hhr hhv hka hkb hkd hkh hkk hko hkr hoa hob hoc hod hoe hoh hok hoo hor hov hr- hra hrb hrc hrd hre hrh hrk hro hrr hrv hv- hva hvb hvc hvd hvk hvo hvr hvv ka- kaa kab kac kad kae kah kak kao kar kav kba kbb kbc kbd kbe kbh kbk kbo kbr kca kcb kcc kcd kce kch kck kcr kda kdb kdc kde kdh kdk kdo kdr ke- kea keb kec ked kee keh kek keo ker kev kha khe khh khk kho khr khv kkb kkc kke kkh kkk kkr kkv koa kob koc kod koe koh kok koo kor kra krc krd krk kro krr krv kva kvb kvh kvk kvo kvr kvv oaa oab oac oad oae oah oak oao oar oav ob- oba obb obc obd obe obh obk obo obr obv oc- oca ocb occ ocd och ock oco ocr ocv oda odb odc odd ode odh odo odr odv oea oeb oec oed oee oeh oeo oer oha ohc ohd ohe ohh oho ohr oka okb okc okd oke okk oko okr oo- ooa oob ooc ood ooh ook ooo oor oov or- ora orb orc ord ore orh ork oro orr orv ov- ova ovb ovc ovd ove ovh ovo ovv ra- raa rab rac rad rae rah rak rao rar rav rba rbb rbc rbd rbe rbh rbk rbo rbr rca rcb rcc rcd rce rch rco rcr rcv rda rdb rdc rdd rde rdh rdo rdr rdv re- rea reb rec red ree reh rek reo rer rev rh- rha rhb rhc rhd rhe rhh rho rhr rhv rkb rkc rke rkk rko rkv roa rob roc rod roe roh rok roo ror rov rra rrb rrc rrd rrh rrk rrr rva rvb rvc rvd rve rvh rvo rvr rvv v-a v-e vaa vab vac vad vae vah vak vao var vav vba vbc vbd vbh vbk vbo vbr vbv vca vcc vcd vce vch vco vcr vdb vdc vdd vde vdh vdk vdo vdr vdv vea veb vec ved vee veh vek veo ver vh- vha vhb vhc vhd vhe vho vka vkb voa vob voc vod voe voh vok voo vor vov vra vrb vrc vrd vre vrh vrk vrr vva vvb vvc vvo vvr vvv

-vac a-ak a-be a-do a-ha a-ok aaaa aaab aaac aaad aaae aaah aaar aaav aaba aabb aabc aabd aabh aaca aacb aacc aacd aace aach aack aaco aacr aacv aada aadc aade aaea aaec aaev aaha aahk aaka aake aaoe aaoo aara aarc aard aare aaro aava abaa abab abac abad abae abak abar abb- abba abbb abbe abbo abbr abca