-ic a-a a-b a-c a-i aaa aab aac aai aak aao aar aav ab- aba abb abc abi abk abo abr abv ac- aca acb acc aci ack aco acr acv ai- aia aib aic aii aik aio air aiv aka akb akc aki akk ako akr akv aoa aob aoc aoi aok aoo aor aov ar- ara arb arc ari ark aro arr arv av- ava avb avc avi avk avo avr baa bab bac bai bak bao bar bav bba bbb bbc bbi bbk bbo bbr bca bcb bcc bci bck bco bcr bcv bi- bia bib bic bii bik bio bir biv bka bkb bkc bkk bko bkr bkv boa bob boc boi bok boo bor bov bra brb bri brk bro brr brv bva bvb bvc bvi bvk bvo bvr bvv c-- caa cab cac cai cak cao car cav cba cbb cbc cbi cbk cbo cbr cbv cca ccb ccc cci cck cco ccr ccv ci- cia cib cic cii cik cio cir civ cka ckb ckc cki cko co- coa cob coc coi cok coo cor cov cra crb crc cri crk cro crr crv cva cvb cvc cvi cvk cvo cvr cvv i-v ia- iaa iab iac iai iao iar iav iba ibb ibc ibi ibk ibo ibr ibv ica icb icc ici ick ico icr icv iia iib iic iii iio iir ika ikb ikc iki ikk iko ikr ikv io- ioa iob ioc ioi ioo ior iov ir- ira irb irc iri irk iro irr irv iva ivb ivc ivi ivo ivr ivv ka- kaa kab kac kai kak kao kar kav kba kbb kbc kbi kbk kbo kbr kca kcb kcc kci kck kcr kia kib kic kii kik kio kir kiv kkb kkc kki kkk kkr kkv koa kob koc koi kok koo kor kra krc kri krk kro krr krv kva kvb kvi kvk kvo kvr kvv o-i oaa oab oac oai oak oao oar oav ob- oba obb obc obi obk obo obr obv oc- oca ocb occ oci ock oco ocr ocv oia oib oic oii oik oio oir oiv oka okb okc oki okk oko okr oo- ooa oob ooc ooi ook ooo oor oov or- ora orb orc ori ork oro orr orv ov- ova ovb ovc ovi ovo ovv ra- raa rab rac rai rak rao rar rav rba rbb rbc rbi rbk rbo rbr rca rcb rcc rci rco rcr rcv ria rib ric rii rik rio rir riv rkb rkc rkk rko rkv roa rob roc roi rok roo ror rov rra rrb rrc rri rrk rrr rva rvb rvc rvi rvo rvr rvv v-a vaa vab vac vai vak vao var vav vba vbc vbi vbk vbo vbr vbv vca vcc vci vco vcr vi- via vib vic vii vik vio vir viv vka vkb voa vob voc voi vok voo vor vov vra vrb vrc vri vrk vrr vva vvb vvc vvi vvo vvr vvv

-vac a-ak a-ii a-iv a-ok aaaa aaab aaac aaai aaar aaav aaba aabb aabc aabi aaca aacb aacc aaci aack aaco aacr aacv aaib aaic aaii aaka aaoo aara aarc aari aaro aava abaa abab abac abai abak abar abb- abba abbb abbi abbo abbr abca abcb abcc abci abcr abia abib abic abir aboa abob abok aboo abor abov abra abrc abri abro abva acaa acab acac acai acar acba acca accc acci acco aci- acia acic acir acoa acor acr- acra acrc acri acro acrr acrv acvv aiai aiba aibo aica aicc aicr aiia aiib aiic aiir aika aiki aiko aioc aioi aira airi airo aiva akaa akai akao akar akca akia akik akio akir akka akki akko akok akr- akra aoba aoca aoki aora aorb arab arac arai arak arar arba arbi arc- arca arci arco aria arib arii arik ario arka arki arko aroa arob aroi aroo aror arr- arra arrc arri arrk arro arrr arva arvi arvo avab avao avar avcc avco avia avic avik avio aviv avor avra avri avro avva avvo ba-i baaa baak baar baba babb babi babo babr bac- baca bacc baci back baco baia baib baic baik baio bair bak- baka baki bako bakr bar- bara barb barc bari bark baro barr bava bavi bbbb bbci bbrc bcaa bcar bcbc bcca bccc bcci bcia bcor bcra bcvo biak biao biar biba bibb bibi bibo bica bicc bici bick bico biko bio- bioc bioi bira birb biri birk biro birr bivi boab boac boai boak boar boba bobb bobi bobo boca bock boco boi- boii boka boki boko boob booc book boor bor- bora bori bork boro borr bova bovi bovo brab brac brai brak brao brav brca brcb bria bric brik brio brka brkb broa brob broc brok broo bror brrr brvi c-bo caaa caab caac caba cabi cabo cac- caca cacc caci cack caco cacr caia caib caic caik caio cair caka caoi caor cara carb carc cari cark caro carr cava cavi cavo cbac cbar cbbc cbca cbcc cbcr cbia cbir cbka cbko cbkr cbva cbvb cbvr ccaa ccab ccac ccai ccar ccba ccbc ccca cccb cccc ccci cccv ccic ccii ccir cciv ccob ccoc ccra ccrc ccri ccvi ccvo ciaa ciak ciao ciar ciba cibc cibi cibo cica cicc cici cico cicr ciia ciii cika ciko cikr ciob cior cira cirb circ ciri cirk ciro cirr civa civc civo ckac ckbc ckbi ckck ckco ckcv ckoa ckob ckoc ckoi ckoo ckor ckrc ckvo coai coak coba cobb cobi cobo coca cock coco coia coir cok- coka coko coob cook cor- cora corb corc cori cork coro corr cova covo crab crac crai crar crbc crca crcc crcr cria crib cric crik crkc crob croc crok croo cror cvac cvar cvca cvcc cvii cvra cvrr iaaa iaac iaai iaba iaca iacc iacr iaia iara iarc iava ibac ibar ibca ibia ibra ibrc ibri ibro icaa icab icac icai icao icar icbc icca iccb iccc icci icco iccr icoc icor icra icrc icrr