-vac a-ii a-iv aaaa aaab aaac aaad aaai aaar aaav aaba aabb aabc aabd aabi aaca aacb aacc aacd aaci aacr aacv aada aadc aadi aaib aaic aaii aara aarc aard aari aava abaa abab abac abad abai abar abb- abba abbb abbi abbr abca abcb abcc abcd abci abcr abda abdi abia abib abic abid abir abra abrc abri abva abvd acaa acab acac acad acai acar acba acca accc accd acci acda acdb acdc acdi aci- acia acic acid acir acr- acra acrc acri acrr acrv acvv adaa adab adac adad adai adar adba adbc adbi adcc adci adda addc addd addi addr adia adib adic adir adra advb advi aiai aiba aica aicc aicd aicr aida aidb aidc aidi aidr aiia aiib aiic aiid aiir aira aird airi aiva aivd arab arac arad arai arar arba arbi arc- arca arci arda ardc ardi aria arib arid arii arr- arra arrc arri arrr arva arvi avab avar avcc avda avdi avia avic avid aviv avra avri avva ba-i baaa baad baar baba babb babi babr bac- baca bacc baci bada badb badd badi badr baia baib baic baid bair bar- bara barb barc bard bari barr bava bavi bbad bbbb bbci bbdd bbrc bcaa bcar bcbc bcca bccc bcci bcda bcia bcra bd-r bdav bdbc bddc bdii biad biar biba bibb bibi bica bicc bici bida bidi bidr bira birb bird biri birr bivi brab brac brad brai brav brca brcb brda bria bric brid brrr brvi c-cd caaa caab caac caba cabi cac- caca cacc caci cacr cada cadc cadd cadi cadr caia caib caic caid cair cara carb carc card cari carr cava cavi cbac cbar cbbc cbca cbcc cbcr cbdb cbdc cbdi cbia cbid cbir cbrd cbva cbvb cbvr ccaa ccab ccac ccad ccai ccar ccba ccbc ccca cccb cccc ccci cccv ccdc ccdi ccdr ccic ccid ccii ccir cciv ccra ccrc ccri ccvi cd-r cdaa cdac cdad cdai cdba cdda cddb cddr cdic cdii cdiv cdvd cdvi ciaa ciar ciba cibc cibi cica cicc cici cicr cida cidc cidi cidr ciia ciid ciii cira cirb circ ciri cirr civa civc crab crac crai crar crbc crca crcc crcr crda crdc cria crib cric cvac cvar cvca cvcc cvid cvii cvra cvrd cvrr daab daad daar daba dabb daca daci dada dadi daia daid dair dara darb darc dard dari darr dava davi dbar dbcc dcbc dcca dccb dccc dcci dccv dcdb dcia dcii dciv dcra dcvd dcvi dddd ddrc dia- diab diac diad diar diba dibb dica dici dida didi diii diiv dira dird dirr diva divd divi draa drab drac drad drar drba drbc drca drda drib dric drra dvar dvda dvdr dvi- dvii dvir dvra iaaa iaac iaai iaba iaca iacc iacr iadb iadc iaia iara iarc iava ibac ibad ibar ibca ibia ibid ibra ibrc ibrd ibri icaa icab icac icad icai icar icbc icbd icca iccb iccc icci iccr icdc icdd icra icrc icrr idad idar idca idcr idda idia idic idid idir idra idrc idvd iiac iica iicd iida iiii iira iirc irac irad irai irar irca ircc ircd irda irdc iri- iria iric irid irra irrc irri ivai ivar ivbv ivda ivdr ivic raab raad raba rabb rabi rac- raca racc raci racv rada radc radd radr raia raic raid raii rair rara rarb rari rava ravi rbbb rbbr rcac rcbc rccb rccc rcdc rcic rcid rcrd rcvr rdac riaa riab riad riai rib- riba rica ricc rida ridc ridd ridi riia riri riva rrad rrrr rv-c rvca vaad vaar vaca vada vadi vaia vaid vair vara vard vari varr vava vbcc vcbi vcci vdcc viad viar vic- vica vici vida vidi viii vira virb virc viri virr viva vivi vrac vrai vrav vrba vrci vrdi vria vvvv